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Version	Date	Author	Comments
Draft	29 October 2007	Chad Au, Cheuk Mak	First Draft
1.0	30 October 2007	Steve Fischer	Changed sweep limits to 1700-2100 MHz for path loss and feeder length measurements.
1.1	31 October 2007	Mark Lane; Tony Silveira	Revised text for grammar; define tests for existing and new feeders, use real short rather than simulated where applicable.
1.2	31 October 2007	Baljit Singh; Morten Jespersen; Mike Bath	Spec insertion loss based on cable length; require data in actual logs, not .pdf; cable length Excel file.
1.3	7 November 2007	Steve Fischer; Chad Au	Added Appendix B – Sweep samples; change all sweeps to 1700-2200 MHz.
1.4	12 December 2007	Cheuk Mak	Update doc to a full antenna system sweep standard
1.5	29 October 2008	Cheuk Mak	Updated Appendix B and added Appendix D for As built drawing
1.6	6 November 2008	Cheuk Mak	Updated Sections 8, 9, 10,11, 12
1.7	7 November 2008	Cheuk Mak	Updated diplexer system sweep
1.8	16 April 2009	Chad Au	Clarify TMA biasing diagrams in Section 10
1.9	24 April 2009	Chad Au	Add 2-port cal diagram to Sec. 7; diplexed TMA test diagrams to Sec. 10; diplexed system sweep descriptions to Sec. 12.2 and 12.3; typical sweep data to appendix
1.10;1.11	28 February 2014	Joe Tseng	Add 700Mhz TMA/Diplexer test Diagrams; Update requirements for 700Mhz, Inband Diplexer, and Triplexer; Update Mainline testing, coax insertion loss
1.12	30 July 2014	Joe Tseng	Corrected IL for diplexer testing measurement tables and RL for TMA tables, modified antenna PIM photo to further clarify direction of antenna, update TMA and Diplexer 700Mhz devices
1.13	6 Nov 2015	Chad Au	New RL pass/fail criteria for RRU and ground based configurations involving PCS/AWS/700 antennas: Sec. 9, 12
1.14	14 January 2016	Joe Tseng	Updated IL for diplexer tables with approved solutions, include 700Mhz-only pass/fail sweep criteria. Sect 9,12 remove (RRU site) comment for PCS/AW/700 ant in sec 12

2. INTRODUCTION

In order to achieve optimum performance of LTE and UMTS antenna line system, it is essential that all critical components of the network be installed and maintained to the highest standards, within practical means. The antennas, cables, and connectors are constantly exposed to the elements. Any degradation in the antenna system can directly impact the radio link, resulting in call setup failures, handover failures, degraded quality, or dropped calls.

The tests described in the following sections are designed to ensure that the antenna, cable tower mounted amplifier (TMA) and diplexer– if applicable – perform to the required specification prior to integration of the BTS/Node B/eNodeB into the network. For sites already on-air, the tests can be used for trouble shooting problems.

3. INTENDED AUDIENCE

This document is primarily designed for T-Mobile RF directors, senior managers, and engineers. It is assumed that users of this document are familiar with the operation of sweep equipment such as the Anritsu SiteMaster.

4. REFERENCE DOCUMENTS

“Antennas,” Second Edition, J. D. Kraus

Antenna Sweep Standard 10-09-07

Sweep Standard T-Mobile NE Rev 2007

5. BASIS FOR ANTENNA SYSTEM MEASUREMENTS

The functionality of an antenna system, i.e. antenna, feeder & jumper cables, and TMA, is determined by these basic tests, which are based primarily on the impedance of the system:

VSWR/Return Loss
DTF (Distance To Fault)
Insertion Loss

5.1. VSWR/Return Loss

In general, any antenna by itself or connected to a transmission line will produce a reflected wave with reflection coefficient r_v and a voltage standing wave ratio (VSWR)¹:

Or,

VSWR is a unit-less value, because it is a ratio. It is usually expressed as “:1” since the ideal value is referenced to unity.

The efficiency of power transfer from RF source to the load impedance is dependent on how well matched is their impedance (output and load). Therefore, the lower the reflection, the greater is the power transfer. This can also be quantified as return loss (RL):

5.2. DTF

The ability to measure the distance to any discontinuity in impedance along the entire antenna system, i.e. connectors, the antenna, TMA, or kinks in the cable, provide a very useful means for locating connectors, faults, and establishing cable lengths within the system. For test instruments using time domain reflectometry (TDR), a DC pulses and their reflections are used to determine the location of discontinuities. However, for instruments such as the Anritsu SiteMaster, frequency domain reflectometry (FDR) is used instead. In this method, the swept frequency data is mathematically transformed using the inverse FFT (Fast Fourier Transform) operation and presented as time (distance) domain data:

Theoretically, the summation should be performed from –¥ to ¥, but the FDR method spans only a finite frequency band. So, its results are approximated. Also, the coaxial cables at the cell site are typically connected to an antenna, which can receive stray signals from the environment. As such, external signal contributions are mixed in with the actual hardware under test. The ideal FDR DTF measurement should be made with a closed system.

Therefore, the results from this method does not measure actual RF performance and should NOT be used for determining pass/fail of the system according to their specifications, but only to establish a baseline for future reference. It is acceptable to use DTF to locate discontinuities and faults, and establish cable lengths within the antenna system.

5.3. Path/Insertion Loss

The insertion or cable loss (CL) of an antenna system is the total loss of signal through the coaxial cables and TMA (where applicable). This loss takes away directly from both the UL and DL link budgets. Contributors to this loss include ohmic losses in the conductors, dielectric losses, and mismatch losses at the connectors and any damages along the cables. Typically, the use of a larger diameter cable will lessen some of these effects.

6. SYSTEM CONFIGURATION

The following illustrates the antenna system during sweep tests:

Note: Torque coaxial cable connectors according to manufacturer’s requirements.

7. REQUIRED EQUIPMENT

Anritsu SiteMaster, or equivalent
Precision Open, Short, and 50-ohm Load calibration standards
Phase-stable test cable(s)
Inter-series adapters for mating between N-type and 7/16 DIN connectors

The Anritsu Site Master S331C is recommended, but the following models can also be used: 235A, S251A/B, S331A/B, MT8222A, or equivalent. Resolution must be set to maximum (typically 512 points) and cannot be below 256 points.

Note: The Anritsu SiteMaster in DTF mode will only measure a maximum cable length of 83 m with 256 points (based on sweep of 2300-2700 MHz and propagation velocity of 0.8). Use of 512 points is recommended.

Number of data points (Resolution)	512 (or the maximum setting for the instrument)
RL, CL and DTF Tests	CW OFF

The Anritsu Site Master shall be warmed up for at least 15 minutes prior to conducting any test and then calibrated. The Site Master shall also be calibrated each time it is powered up. If the temperature icon indicates excessive ambient temperature, it shall be re-calibrated.

Ensure all cables and jumpers under test are in their permanent locations and anchored positions. Hangers, cable blocks, ground kits, and other hardware must be in place and connected using industry-standard torque wrenches to meet specifications for connectors.

7.1. Calibration and Equipment Setup

Before making any measurements, the test equipment shall be allowed to stabilize for a period of approximately 15 minutes and calibrated for 1-port return loss measurements using a phase stable cable, precision 50 ohm load, open, and short circuit terminations (Figure 1a), or 2-port insertion loss/gain measurements (Figure 1b), as appropriate. Detailed examples of how to setup and calibrate Anritsu equipment can be found in Appendix A. NOTE: Equipment must be calibrated per manufacturer suggested calibration period.

Note: The Anritsu SiteMaster will not detect when a short is erroneously connected when the prompt is for an open and vice versa, resulting in a faulty calibration, and thus, invalid measurements.

Note: When changing measurements from mid-band (PCS and AWS) to low-band spectrum (700 MHz), calibration of the sweep equipment will be required for the new measured band. Inversely when changing measurements from low-land (700 MHz) to mid-band (PCS and AWS) spectrum, calibration of the sweep equipment will be required for the new measured band.

Figure 1a Anritsu SiteMaster 1-Port Calibration Setup

Figure 1b Anritsu SiteMaster 2-Port Calibration Setup

8. Sweep Requirement

The Section below will describe T-Mobile Sweep requirement:

Antenna Quality Sweeps (On Site)
TMA Quality Sweeps (On Site)
Diplexer Quality Sweeps (On Site) if applicable
Main Feeder Line Sweeps
Antenna System Sweeps

9. QUALITY OF ANTENNAS (On Site)

It is recommended that sweep tests are done by antenna line GC on site before installation. The quality of the impedance match to 50-ohms at the antenna connectors is determined. This test is performed with the SiteMaster calibrated for a one-port return loss measurement to the end of the test cable. With the N-type connector on the test cable and calibration kit, an N-DIN adapter has to be inserted to allow mating of the test cable to the antenna. Ensure that the antenna is positioned face-up (Figure 2) towards the sky at least 24” above the ground and away from metallic structure or equipment, e.g. not inside shelter or under ice bridge, set it on a non-metallic fixture such as a trash can.

Configure the test equipment in return loss mode and calibrate per Section 7.
Set antenna RET to 0° for worst case
Identify if the antenna passes or fails.
Save the trace for printing. This shall include site and sector numbers for identification.

A copy of each trace shall be attached to the antenna sweep checklist so that the RF Engineer can inspect and sign off acceptable results.

Figure 2 Antenna Test with SiteMaster

Sweep Test Frequency Range

698 – 746 MHz; 1710 – 2155 MHz (Note: Antenna port dependent)

Vertical Axis

0 dB to -40 dB

700 MHz

RL Sweep Limits

UL: 698 MHz – 716 MHz

DL: 728 MHz – 746 MHz

Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz

AWS RL

Sweep Limits

UL: 1710 MHz –1755 MHz

DL: 2110 MHz – 2155 MHz

Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz

PCS RL

Sweep Limits

UL: 1850 MHz – 1910 MHz

DL: 1930 MHz – 1990 MHz

Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz

Antenna Return Loss – standalone

· All antenna ports are tested to determine RL is within specifications.

· RL ≤ –16 dB (VSWR <= 1.4:1) for variable tilt PCS/AWS and 700-only antenna

· RL ≤ –14 dB (VSWR <= 1.5:1) for variable tilt PCS/AWS/700 antenna

· RL ≤ –18 dB (VSWR <= 1.3:1) for fixed tilt antenna

Save sweeps as

(1 sweep per ANT port) – See Ch 13

1. SiteID_ColorCode_ ANT####_ RL_P#_???_Date (All frequency bands applicable need to measured)

ANT#### = ANT last 4 digits of the serial #

P# = Antenna Port number

??? = Frequency band being measured (AWS, PCS, and 700)

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

10. QUALITY OF TMA (On Site)

10.1. TMA Gain and Insertion Loss

It is recommended that sweep tests are done by antenna line GC on site before installation. For TMA’s not yet integrated into the antenna system, this shall be the method of verifying TMA gain. A two-port test device, such as an Anritsu SiteMaster S251A or Agilent Network Analyzer is required. The test gear is used to generate a sweep signal into the antenna port of the TMA. This signal then emerges at the BTS port and is measured by the input port of the test equipment, with gain in the receive band.

Calibrate per Sec. 7 the instrument with two test cables for a two-port “Thru” measurement for gain test.
TMA must be biased through the internal DC source of the Site Master or +12Vdc from other DC source when TMA is tested through each channel.
Note that TMA equipment under test must be labeled and identified by the sector where they are to be installed.

Figure 3a Dual Band or Twin TMA Gain Test with SiteMaster; be sure the TMA is turned on either with internal or external 12VDC bias, respectively.

Figure 3a Diplexed TMA Gain Test with SiteMaster; be sure the TMA is turned on either with internal or external 12VDC bias, respectively.

TMA Gain – standalone

Determines the Gain of the TMA.

Pass/Fail limit is 12 ± 1 dB; 1850 – 1910 MHz; 1710 – 1755 MHz

Both paths of TMA are measured

TMA Tx Band

Insertion Loss

Pass/Fail limits: ≤ 0.5 dB for TMA only; 1930 – 1990 MHz, 2110 – 2155 MHz

Pass/Fail limit: ≤ 0.3 dB for 700 MHz bypass where applicable; 698 – 746 MHz

*Value based on the table 1 in section 11 listed below; if diplexer is installed, add the insertion of the diplexer to the TMA

Sweep Test Frequency Range

698 – 746 MHz; 1710 – 2155 MHz

700 MHz

IL Sweep (where applicable)

UL: 698 MHz – 716 MHz

DL: 728 MHz – 746 MHz

Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz

AWS IL

Sweep Limits

UL: 1710 MHz –1755 MHz

DL: 2110 MHz – 2155 MHz

Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz

PCS IL

Sweep Limits

UL: 1850 MHz – 1910 MHz

DL: 1930 MHz – 1990 MHz

Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz

Save Sweep as

(1 sweep per BTS port) – See Ch 13

“SiteID_ColorCode_TMA####_GAIN_P#_???_Date” (All frequency bands applicable need to measured)

TMA#### = TMA last 4 digits of the serial #

P# = Port number as marked in TMA

??? = Frequency band being measured (AWS, PCS, and 700)

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

10.2. TMA Return Loss

Configure the test equipment in return loss mode and calibrate per Sec. 7.

TMA must be biased through the internal DC source of the Site Master or +12Vdc from other DC source when TMA is tested.

Identify if the TMA passes or fails.
Save the trace for printing. This shall include site and sector numbers for identification.

Note that equipment must be labeled with mark of the sector where they belong.

Figure 4a Dual Band or Twin TMA Return Loss Test with SiteMaster, with internal and external bias, respectively. Be sure to use 50 ohm load

Figure 4b Diplexed TMA Return Loss Test with SiteMaster, with internal and external bias, respectively. Be sure to use 50 ohm load

TMA Return Loss (RL) – standalone

Determines the Return Loss of the TMA.

Pass/fail limit is =< -18dB on Marker 5 and 6

The RL of all TMA connectors are measured.

Overall Sweep Frequency Range

698-746 MHz;1710 - 2155 MHz

700 MHz

RL Sweep (where applicable)

UL: 698 MHz – 716 MHz

DL: 728 MHz – 746 MHz

Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz

AWS RL

Sweep Limits

UL: 1710 MHz –1755 MHz

DL: 2110 MHz – 2155 MHz

Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz

PCS RL

Sweep Limits

UL: 1850 MHz – 1910 MHz

DL: 1930 MHz – 1990 MHz

Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz

Save Sweep as

(1 per ANT port and 1 per BTS port) – See Ch 13

1. SiteID_ColorCode_TMA####_RL_BTS#_???_Date (All frequency bands applicable need to measured)

2. SiteID_ColorCode_TMA####_RL_ANT#_???_Date (All bands applicable need to measured)

TMA#### = TMA last 4 digits of the serial number

BTS# = BTS Port number as marked in TMA

ANT# = ANT Port number as marked in TMA

??? = Frequency band being measured (AWS, PCS, and 700)

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

11. QUALITY OF Diplexer (On Site)

11.1. Diplexer/Triplexer Insertion Loss

It is recommended that sweep tests are done by antenna line crew on site before installation. For diplexers and triplexers not yet integrated into the antenna system, this shall be the method of verifying their insertion loss. A two-port test device, such as an Anritsu SiteMaster S251A, Agilent Network Analyzer, or equivalent is required. The test gear is used to generate a sweep signal into the antenna port of the TMA. This signal then emerges at the BTS port and is measured by the input port of the test equipment, with gain in the receive band. Calibrate the instrument with the two test cables for a two-port “Thru” measurement for gain test.

Terminate all ports not being swept with 50 Ω
Note that equipment under test must be labeled with mark of the sector where they belong.

Figure 5 Diplexers and Triplexer insertion loss test with SiteMaster

Diplexer Insertion Loss

Determines the Insertion Loss of the diplexer.

700, AWS, PCS value should be based on those found in Table 1.

Overall Sweep Frequency Range

698-746 MHz;1710 - 2155 MHz

700 MHz

IL Sweep (where applicable)

UL: 698 MHz – 716 MHz

DL: 728 MHz – 746 MHz

Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz

AWS IL

Sweep Limits

UL: 1710 MHz –1755 MHz

DL: 2110 MHz – 2155 MHz

Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz

PCS IL

Sweep Limits

UL: 1850 MHz – 1910 MHz

DL: 1930 MHz – 1990 MHz

Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz

Save Sweep as

(1 sweep per BTS port) – See Ch 13

1. SiteID_ColorCode_DLR####_IL_???_Date (All frequency bands applicable need to measured)

DLR#### = TMA last 4 digits of the serial #

P# = Port number as marked in TMA

??? = Frequency band being measured (AWS, PCS, and 700)

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

11.2. Diplexer Return Loss

Configure the test equipment in return loss mode and calibrate.
Identify if the diplexer passes or fails.
Save the trace for printing. This shall include site and sector numbers for identification.

Note that equipment must be labeled with mark of the sector where they belong.

Figure 6. Diplexer Return Loss Test with SiteMaster, be sure to use 50 ohm load

TMA Return Loss (RL) – standalone

(applied over sweep limits)

Determines the Return Loss of the diplexer.

Pass/fail limit is =< -18dB on Marker 5 and 6

The RL of all TMA connectors are measured.

Overall Sweep Test Frequency Range

698-746 MHz;1700 - 2165 MHz

700 MHz

RL Sweep (where applicable)

UL: 698 MHz – 716 MHz

DL: 728 MHz – 746 MHz

Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz

AWS RL

Sweep Limits

UL: 1710 MHz –1755 MHz

DL: 2110 MHz – 2155 MHz

Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz

PCS RL

Sweep Limits

UL: 1850 MHz – 1910 MHz

DL: 1930 MHz – 1990 MHz

Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz

Save Sweep as

(1 per BTS and 1 per ANT port) – See Ch 13

1. SiteID_ColorCode_DLR####_RL_???_Date (All frequency bands applicable need to measured)

2.SiteID_ColorCode_DLR####_RL_ANT_???_Date (All frequency bands applicable need to measured)

DLR#### = TMA last 4 digits of the serial number

??? = Frequency band being measured (AWS, PCS, and 700)

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

Make	Type	Model	Insertion Loss, Max, (dB)
CommScope	Dualband AWS port	E15S08P78	0.3
CommScope	Dualband PCS port	E15S08P78	0.7
CommScope	Twin AWS	E15S08P80	0.3
CommScope	Twin PCS	E15S09P99	0.7
CommScope	Bias Tee	ABT-DFDM-ADB	0.1
CommScope	Smart Bias Tee	ATBT-S5xx	0.1
CommScope	Diplexer DC Switching	ECC1920-VPUB	0.3 (AWS) 0.3 (PCS)
RFS	Dual band AWS port	ATMAP1412D-1A20	0.4
RFS	Dual band PCS port	ATMAP1412D-1A20	0.6
RFS	Twin AWS	ATMAA1412D-1A20	0.4
CommScope	AWS In-Band Diplexer	D-AWS-10-A-CDEF, D-AWS-10-B2C-F, D-AWS-10-B-EF	0.5
CommScope	AWS 5M gb In-Band Diplexer	TD-AWS-5-ABC-EF[1], TD-AWS-5-ABCD-F[2], TD-AWS-5-AB-DEF1[3]	0.8
CommScope	PCS In-Band Diplexer	TD-PCS-5-A-B_C, TD-PCS-5-A4_D-B4_C, , TD-PCS-5-B-FC, TD-PCS-5-B4_E-C	0.7
CCI	AWS 0M GB In-Band Diplexer	LLC-1721-FTU-0-F1F2, LLC-1721-FTU-0-A1A2, LLC-1721-FTU-0-CD	0.7[4]
Commscope	Mid band TMA w/ 700M bypass (Style 3C)	TMAT1921B78-31-A	0.3 (AWS) 0.5 (PCS) 0.2 (700 MHz)
Commscope	Diplexed AWS+700 ABC TMA (Style 3D)	TMAS7LABC21-210A	0.2 (AWS) 0.3 (700 MHz)
RFS	Twin 700 TMA	ATM700LD-1A20	0.3
Commscope	Twin Mid band/700 Diplexer	CDX723AT-DS (E15V95P46)	0.15 (AWS/PCS) 0.15 (700 MHz)
Commscope	Twin Multiband Triplexer	CBC61921x-DS-2X	0.3 (AWS/PCS) 0.2 (700 MHz)

Table 1 Insertion Loss Limits of various TMA’s, diplexers, and triplexer

12. ANTENNA SYSTEM SWEEPS

The following sweep tests must be completed before the site can be approved. The traditional ground based site configuration has an antenna system consisting of antenna, antenna jumper, LNA (operating in the on-mode), LNA jumpers, and main feeder. However, with more and more sites having remote radio units (RRU) deployed close to the antennas via hybrid cable, those antenna systems consist of merely a short jumper cable and the antenna itself. Therefore, the term “main feeder” below is a generalized description to mean either the main coax cable at a traditional ground base site, or just the jumper cable between the radio head and the antenna for an RRU site.

Note: All data shall be recorded in raw data logs, and not Adobe Acrobat “pdf” format or .jpg, to allow further post processing.

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

Main Feeder Sweeps

Main Feeder Return Loss Measurement with Load (12.1.1)
Main Feeder Return Loss Measurement with Short (12.1.2)

System Sweeps

System Return Loss Measurement (12.2; for system sweep diagram for system with diplexer refer to Appendix D) with Antenna
System Path Loss Measurement (12.3)
System Distance to Fault cable length (can also be obtain by converting 12.3 path loss into “DTF”) measurement (12.4)

12.1. Main Feeder Line Sweep

The following set of tests shall be performed for the main feeder line

12.1.1. Main Line Return Loss Measurement – 50 W Dummy Load

Perform measurement with 50 ohm dummy load connected at tower top end of cable.

Figure 7 50 ohm dummy load connected at tower top end of cable.

Overall Sweep Frequency Range

698-746 MHz;1710 - 2155 MHz

700 MHz

RL Sweep Limits (where applicable)

UL: 698 MHz – 716 MHz

DL: 728 MHz – 746 MHz

Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz

AWS RL

Sweep Limits

UL: 1710 MHz –1755 MHz

DL: 2110 MHz – 2155 MHz

Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz

PCS RL

Sweep Limits

UL: 1850 MHz – 1910 MHz

DL: 1930 MHz – 1990 MHz

Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz

Vertical Axis

0 dB to -40 dB

Pass/Fail Limit (applied over sweep limits)

≤ -24 dB with 50 ohm dummy load connected

Save Whole System Test As

(1 sweep per line) – See Ch 13

“SiteID_ColorCode_MLRL_???_Date” (All frequency bands applicable need to measured)

??? = Frequency band being measured (AWS, PCS, and 700)

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

12.1.2. Main Line Path Loss Measurement – Short

Perform measurement with short circuit terminator connected at tower top end of cable. Return loss value must be divided by 2 to result in true path loss.

Figure 8 Short circuit terminator connected at tower top end of cable.

700 MHz

RL Sweep Limits (where applicable)

UL: 698 MHz – 716 MHz

DL: 728 MHz – 746 MHz

Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz

AWS RL

Sweep Limits

UL: 1710 MHz –1755 MHz

DL: 2110 MHz – 2155 MHz

Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz

PCS RL

Sweep Limits

UL: 1850 MHz – 1910 MHz

DL: 1930 MHz – 1990 MHz

Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz

Vertical Axis

0dB to -40dB

Main Feeder

With short circuit terminator

Total System Pass/Fail Limit

(Use spreadsheet in Appendix for particular cable type’s expected insertion loss criteria)

Save Whole System Test As

(1 sweep per line) – See Ch 13

“SiteID_ColorCode_MLPL_???_Date” in Site Master (All frequency bands applicable need to measured)

??? = Frequency band being measured (AWS, PCS, and 700)

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

12.2. System Return Loss Measurement

The impedance measurement of an antenna system with a TMA installed will be assessed through the feeder, the impedance of the LNA output stage for the Rx band, and the Tx filter characteristics. For diplexed configurations where the main feeder is shared between 2G and 3G base stations, the diplexer is then part of the system and shall be included in the measurement.

Note: For the exception case where RFS TMA’s without bypass are involved, the return loss criteria at the UL band of 1710-1755 MHz do not apply.

Figure 9 System sweep include antenna, antenna jumper, TMA (if used), TMA jumper, feeder cable, diplexer (if used), and cabinet jumper

Sweep Frequency Range

698-746 MHz;1710 - 2155 MHz

700 MHz

RL Sweep Limits (where applicable)

UL: 698 MHz – 716 MHz

DL: 728 MHz – 746 MHz

Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz

AWS RL

Sweep Limits

UL: 1710 MHz –1755 MHz

DL: 2110 MHz – 2155 MHz

Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz

PCS RL

Sweep Limits

UL: 1850 MHz – 1910 MHz

DL: 1930 MHz – 1990 MHz

Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz

Vertical Axis

0 dB to -40 dB

Total System

Feeder Cable, Diplexer (if used), TMA Jumper Cable, TMA (if used), Antenna Jumper Cable, Antenna

*Refer to Appendix D for system with diplexer

Total System Pass/Fail Limit (applied over sweep limits)

≤ -18 dB with fixed tilt PCS/AWS antenna

≤ -16 dB with fixed tilt PCS/AWS antenna with TMA (ON)

≤ -14 dB (VSWR <= 1.5:1) for variable tilt PCS/AWS/700 antenna

≤ -16 dB with variable tilt PCS/AWS and 700-only antenna

≤ -16 dB with variable tilt PCS/AWS and 700-only antenna with TMA (ON)

Save Whole System Test Log

As – See Ch 13

“SiteID_ColorCode_SRL_???_Date” (All frequency bands applicable need to measured)

??? = Frequency band being measured (AWS, PCS, and 700)

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

12.3. System Path Loss Measurement

As tower work is performed to install or swap antennas and/or TMA’s, the installer shall attach a short circuit termination for this measurement, which is the required method. For diplexed configurations where the main feeder is shared between 2G and 3G base stations, the diplexer is then part of the

system and shall be included in the measurement.

Return loss value must be divided by 2 to result in true path loss.

Figure 10a System sweep include short circuit termination, antenna jumper, TMA (if used), TMA jumper, feeder cable, and cabinet jumper

Figure 10b System sweep include short circuit termination, antenna jumper, TMA (if used), TMA jumper, feeder cable, diplexer (if used) and cabinet jumper

Overall Sweep Frequency Range	698-746 MHz;1710 - 2155 MHz
700 MHz RL Sweep Limits (where applicable)	UL: 698 MHz – 716 MHz DL: 728 MHz – 746 MHz Markers @: Max Peak 698 – 716 MHz, Max Peak 728 – 746 MHz
AWS RL Sweep Limits	UL: 1710 MHz –1755 MHz DL: 2110 MHz – 2155 MHz Markers @: Max Peak 1710 – 1755 MHz, Max Peak 2110 – 2155 MHz
PCS RL Sweep Limits	UL: 1850 MHz – 1910 MHz DL: 1930 MHz – 1990 MHz Markers @: Max Peak 1850 – 1910 MHz, Max Peak 1930 – 1990 MHz
Vertical Axis	0dB to -40dB
Total System	Feeder Cable, Diplexer (if used), TMA Jumper cable, TMA (if used), Antenna Jumper Cable, Antenna *Refer to Appendix D for system with diplexer
Total System Pass/Fail Limit	(Use spreadsheet in Appendix A for particular cable type’s expected insertion loss criteria) +/- 5% from the calculated value on Marker 3
Save Whole System Test Log As – See Ch 13	“SiteID_ColorCode_SPL_???_Date” (All frequency bands applicable need to measured) ??? = Frequency band being measured (AWS, PCS, and 700)

12.4. Cable Length Measurement

A close approximation of the coaxial length can be obtained without the need for a short-circuit termination at the tower top. From the measurement taken from Sec. 10.1.2, the Anritsu SiteMaster can convert the Return Loss measurement to a Distance-To-Fault (DTF) measurement, thereby providing the length of the feeder cable.

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]

Overall Sweep Frequency Range	698-746 MHz;1710 - 2155 MHz
Markers	Marker 1: Max Peak (meters)
Vertical Axis	0dB to -40dB
Horizontal Axis	0m to 150m
Total System	Feeder Cable, Diplexer (if used) TMA Jumper cable, TMA (if used), Antenna Jumper Cable, Antenna *Refer to Appendix D for system with diplexer
Total System Pass/Fail Limit	Within 0.5m of the other feeder cable length
Save Whole System Test Log As – See Chapter 13	“SiteID_ColorCode_DTF_???_Date” ??? = Frequency band being measured (AWS, PCS, and 700) [Note: File naming convention is a suggestion and naming should follow National Operations standards.]

13. Data Format

[Note: File naming convention is a suggestion and naming should follow National Operations standards.]
Each sweep measurement data trace shall be clearly labeled BEFORE the test is performed with:

Site ID
ColorCode (i.e. red, red, white = RRW)
Type of measurement (i.e. system return loss = SRL)
Frequency band of sweep [?B = MB for mid-band (AWS/PCS) and LB for low-band (700Mhz)]
Date (i.e. November 6, 2008 = 110608)

All Sweep measurement must be save in format that can be open with notepad or MS excel for analysis
All Sweeps for a site be saved under one folder that name “Site ID” (i.e. SEA012345)
All Measurement log must be save in the same folder with name “SiteID_MeaLog_Date

11 Contact List

Name	Position/Department	Contact Number	Email
Chad Au	Principal Engineer, SystDesign& Strategy, Technology	425-748-3121	Chad.Au@t-mobile.com
Joe Tseng	Sr Engineer, SystDesign & Strategy, Technology	425-383-2689	Joe.Tseng@t-mobile.com
Jeff Anderson	Sr Manager, Systems Design & Strategy, Technology	425-344-0011	Jeff.Anderson@t-mobile.com

APPENDIX A – Coaxial Cable Spec Summary Table

Coaxial Cable Return Loss/VSWR

Make	Cable	Model	Return Loss	VSWR (max.)
CommScope	7/8” Heliax	LDF5-50A	-24.5 dB	1.13:1
CommScope	1-1/4” Heliax	LDF6-50A	-24.5 dB	1.13:1
CommScope	1-5/8” Heliax	LDF7-50A	-24.5 dB	1.13:1
CommScope	2-1/4” Heliax	LDF12-50	-24.5 dB	1.13:1
CommScope	7/8” Virtual Air	AVA5-50	-24.5 dB	1.13:1
CommScope	1-1/4” Virtual Air	AVA6-50	-24.3 dB	1.13:1
CommScope	1-5/8” Virtual Air	AVA7-50	-24.5 dB	1.13:1
CommScope	1-1/4” Aluminum	FXL 140-1	-26.4 dB	1.10:1
CommScope	1-5/8” Aluminum	FXL 1873	-26.4 dB	1.10:1
RFS	7/8” Premium	LCF78-50JA-A5	-24.0 dB	1.135:1
RFS	1-1/4” Premium	LCF114-50JA-A5	-24.0 dB	1.135:1
RFS	1-5/8” Premium	LCF158-50JA-A5	-24.0 dB	1.135:1
RFS	7/8” Standard	LCF78-50	-24.0 dB	1.135:1
RFS	1-5/8” Standard	LCF158-50	-24.0 dB	1.135:1
Eupen	7/8” Standard	EC5-50	-24.5 dB	1.13:1
Eupen	1-1/4” Standard	EC7-50	-24.5 dB	1.13:1
Eupen	1-5/8” Standard	EC12-50	-24.5 dB	1.13:1
All	Existing Coaxial Feeder	All	-22.0 dB	1.17:1

Coaxial Cable Path Loss per 100ft

Make	Cable	Model	Velocity	Loss/100’
Make	Cable	Model	Velocity	@2 GHz	@700 MHz
CommScope	½” Heliax	LDF4-50A	0.88	3.25 dB	1.83 dB
CommScope	½” SuperFlex	FSJ4-50B	0.81	5.37 dB	2.95 dB
CommScope	7/8” Heliax	LDF5-50A	0.89	1.86 dB	1.03 dB
CommScope	1-1/4” Heliax	LDF6-50A	0.89	1.35 dB	0.73 dB
CommScope	1-5/8” Heliax	LDF7-50A	0.88	1.13 dB	0.60 dB
CommScope	2-1/4” Heliax	LDF12-50	0.88	0.99 dB	0.52 dB
CommScope	7/8” Virtual Air	AVA5-50	0.91	1.76 dB	0.99 dB
CommScope	1-1/4” Virtual Air	AVA6-50	0.92	1.25 dB	0.71 dB
CommScope	1-5/8” Virtual Air	AVA7-50	0.92	1.02 dB	0.56 dB
CommScope	1-1/4” Aluminum	FXL 1480	0.89	1.24 dB	0.69 dB
CommScope	1-5/8” Aluminum	FXL-1873	0.88	1.02 dB	0.55 dB
RFS	½” CellFlex	LCF12-50J	0.88	3.20 dB	1.81 dB
RFS	½” SuperFlex	SCF12-50J	0.88	4.82 dB	2.82 dB
RFS	7/8” CellFlex Premium	LCF78-50JA-A5	0.90	1.68 dB	0.95 dB
RFS	1-5/8” CellFlex Prem	LCF158-50JA-A5	0.90	1.02 dB	0.76 dB
RFS	2-1/4” CellFlex Prem	LCF214-50	0.88	1.05 dB	0.56 dB
Eupen	½” Standard	EC4-50A	0.88	3.25 dB	1.83 dB
Eupen	½” HiFlex	EC4-50-HF	0.88	4.90 dB	2.70 dB
Eupen	7/8” Standard	EC5-50A	0.88	1.71 dB	0.96 dB
Eupen	1-5/8” Standard	EC7-50A	0.88	1.05 dB	0.61 dB

APPENDIX B – Measurement Log Table

APPENDIX C – Example Sweeps

Return Loss for antenna system with no TMA:

Diplexed antenna system with TMA, PCS path:

Diplexed antenna system with TMA, AWS path:

Cable Path Loss, with short connected at top of TMA jumper:

Cable Length:

APPENDIX D – Diplexed TMA/Diplexer System Sweep Setup

Return Loss Sweep Setup

[1] Unit still in validation

[2] Unit still in validation

[3] Unit still in validation

[4] To maintain a balance between narrow guard band and isolation, the IL (insertion loss) at the band edges of the filter are not ideal. Expect the IL to be between .7 to 1.5 dB within 1 MHz of the band edges of the filter for the Zero Guard band models. The IL within the main portion (portion between beyond the 1Mhz of the band edge) of the filter should be or exceed 0.7 dB.

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T-Mobile Antenna Spec Sheet

Table of Contents

1. REVISION INFORMATION

2. INTRODUCTION

3. INTENDED AUDIENCE

4. REFERENCE DOCUMENTS

5. BASIS FOR ANTENNA SYSTEM MEASUREMENTS

5.1. VSWR/Return Loss

5.2. DTF

5.3. Path/Insertion Loss

6. SYSTEM CONFIGURATION

7. REQUIRED EQUIPMENT

7.1. Calibration and Equipment Setup

8. Sweep Requirement

9. QUALITY OF ANTENNAS (On Site)

10. QUALITY OF TMA (On Site)

10.1. TMA Gain and Insertion Loss

10.2. TMA Return Loss

11. QUALITY OF Diplexer (On Site)

11.1. Diplexer/Triplexer Insertion Loss

11.2. Diplexer Return Loss

12. ANTENNA SYSTEM SWEEPS

12.1. Main Feeder Line Sweep

12.1.1. Main Line Return Loss Measurement – 50 W Dummy Load

12.1.2. Main Line Path Loss Measurement – Short

12.2. System Return Loss Measurement

12.3. System Path Loss Measurement

12.4. Cable Length Measurement

13. Data Format

11 Contact List

APPENDIX A – Coaxial Cable Spec Summary Table

Coaxial Cable Return Loss/VSWR

Coaxial Cable Path Loss per 100ft

APPENDIX B – Measurement Log Table

APPENDIX C – Example Sweeps

APPENDIX D – Diplexed TMA/Diplexer System Sweep Setup

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