Anritsu MS2711B User manual

MS2711B
Hand Held
Spectrum Analyzer
MAINTENANCE MANUAL
Hand-Held Spectrum Analyzer
for Measuring, Monitoring and Analyzing
Signal Environments
P/N: 10580-00072
REVISION A
PRINTED: MAY 2002
COPYRIGHT 2002 ANRITSU CO.
490 JARVIS DRIVE ·MORGAN HILL, CA 95037-2809

Table of Contents
1. INTRODUCTION .......................................1
2. IDENTIFICATION NUMBER ................................1
3. DESCRIPTION ........................................1
4. OPTIONS ...........................................1
5. PERFORMANCE VERIFICATION PROCEDURES ....................2
5.1. Frequency Accuracy ..................................2
5.2. Internal Reference Frequency Adjustment ......................2
5.3. Phase Noise Verification ................................3
5.4. Second Harmonic Distortion Test ...........................4
5.5. Residual Spurious Response Test ...........................5
5.6. Resolution Bandwidth Accuracy Test .........................6
5.7. Level Accuracy Test ..................................8
5.8. Displayed Average Noise Level ............................9
5.9. Dynamic Range Test .................................10
5.10. Power Monitor (Option 5) Verification ........................11
5.11. Preamplifier (Option 8) Verification .........................12
5.11.1. Displayed Average Noise Level .......................12
5.11.2. Level Accuracy Test .............................13
5.12. Tracking Generator (Option 20) Verification.....................16
5.12.1. Output Level Accuracy Test .........................16
5.12.2. Tracking Generator Harmonics And Spurious Test.............17
5.12.3. Frequency Offset Tracking Test .......................19
6. STATIC SENSITIVE ASSEMBLY HANDLING ......................20
7. BATTERY PACK REMOVAL AND REPLACEMENT ...................21
8. BATTERY INFORMATION .................................22
8.1. Battery Testing Procedure ..............................22
9. FRONT PANEL ASSEMBLY REMOVAL AND REPLACEMENT.............23
10. LCD ASSEMBLY REPLACEMENT ............................24
11. KEY PAD PCB REPLACEMENT ..............................24
12. KEY PAD MEMBRANE REPLACEMENT .........................25
13. PCB ASSEMBLY REPLACEMENT.............................25
14. REPLACEABLE PARTS...................................27
MS2711B HHSA MM i/ii

1. INTRODUCTION
This manual provides maintenance instructions for
the MS2711B Spectrum Analyzer. It describes the
product and provides performance verification proce-
dures, parts replacement procedures, and a replace-
able parts list.
2. IDENTIFICATION NUMBER
All Anritsu instruments are assigned a six-digit se-
rial number, such as "101001." This number appears
on a decal affixed to the back panel of the instru-
ment. Please use this identification number during
any correspondence with Anritsu Service Centers
about this instrument.
3. DESCRIPTION
The MS2711B Spectrum Analyzer is a synthe-
sizer-based hand held spectrum analyzer that pro-
vides quick and accurate signal results. Measure-
ments can be easily made using the main instrument
functions: frequency, span, amplitude and band-
width. A simplified block diagram is provided in Fig-
ure 1.
4. OPTIONS
The following options are available for the MS2711B:
·Option5—RFWattmeter Power Monitor (RF
detector not included)
·Option 8 ¾Built-in 20 dB Preamplifier, 1 MHz
to 3 GHz
·Option 20 ¾Built-in Tracking Generator, 10
MHz to 3 GHz
NOTE
Options 5 and 8 are mutually exclusive; that
is, they cannot both be installed in the same
instrument at the same time.
MS2711B HHSA MM 1
N
N
HI-BAND
LO-BAND
IF AMP LOG
CPU
RF
INPUT
0-50dB
REF
RBW
VCO1 VCO2
VCO3 VCO4
A/D
VBW
INPUT ATTENUATOR
AND LIMITER
N N
Figure 1. MS2711B Spectrum Analyzer Block Diagram

5. PERFORMANCE VERIFICATION
PROCEDURES
The following procedures can be used to verify the
performance of the MS2711B Spectrum Analyzer
having firmware version 2.09 or later.
5.1. Frequency Accuracy
The following test can be used to verify the CW fre-
quency accuracy of the Spectrum Analyzer.
a. Equipment Required:
·Anritsu MG3692A Synthesized Signal
Source with option 15A, or equivalent
·Anritsu 34RSN50 50 ohm adapter or
equivalent
·Anritsu 15NNF50-1.5C RF Coaxial Cable
or equivalent
·10 MHz Reference Standard
·BNC male to BNC male coaxial cable
b. Procedure:
1. Connect the 10 MHz reference source to
the Anritsu MG3692A Synthesized Signal
Source.
2. Connect the output of the source to the
MS2711B RF Input.
3. Connect the external power supply
(Anritsu part number 40-115) to the
MS2711B.
4. Press and hold the ESCAPE/CLEAR key,
then press the ON/OFF key to turn on the
Spectrum Analyzer. (This sets the instru-
ment to the factory preset state.)
5. Turn on the 10 MHz reference source and
the Anritsu MG3692A Synthesized Signal
Source.
6. Set the MG3692A output to 2000 MHz,
CW with an RF output level of 0 dBm.
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
7. On the MS2711B, press the AMPLITUDE
key and the REF LEVEL soft key.
8. Enter 20 and press the ENTER key to set
the Reference Level to 20 dBm.
9. Press the FREQ/SPAN key and the CENTER
soft key.
10. Enter 2000 and press the ENTER key to
set the center frequency to 2000 MHz.
11. Press the SPAN soft key and enter 50.
Press the kHz soft key to set the span to
50 kHz.
12. Press the BW/SWEEP key.
13. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 10 kHz. Press ENTER to set the
resolution bandwidth to 10 kHz and select
BACK.
14. Press the VBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 3 kHz. Press ENTER to set the
video bandwidth to 3 kHz.
15. Press the MARKER key, then the M1 soft
key.
16. Select the EDIT soft key and use the
Up/down arrow key to center the marker
on the waveform. Verify that the marker
frequency is 2000 MHz, ±4 kHz.
NOTE
If the unit fails the Frequency Accuracy test,
perform the Internal Reference Frequency Ad-
justment procedure in Section 5.2. If the units
still fails the Frequency Accuracy test after
the Internal Reference Frequency Adjustment
has been completed, replace the PCB assem-
bly.
5.2. Internal Reference Frequency Adjust-
ment
Use this procedure to adjust the frequency if the unit
fails the Spectrum Analyzer Frequency Accuracy
verification test in Section
a. Equipment Required:
·Anritsu MG3692A Synthesized Signal
Source, with options 2A, 4 and 15A, or
equivalent
·Anritsu 34RSN50 50 ohm adapter or
equivalent
·Anritsu 15NNF50-1.5C RF Coaxial Cable
or equivalent
·10 MHz Reference Standard
·BNC male to BNC male coaxial cable
2 MS2711B HHSA MM

b. Procedure:
1. Connect the 10 MHz reference source to
the Anritsu MG3692A Synthesized Signal
Source.
2. Connect the output of the source to the RF
Input of the Spectrum Analyzer.
3. Connect the external power supply
(Anritsu part number 40-115) to the Spec-
trum Analyzer.
4. Press and hold the ESCAPE/CLEAR key,
then press the ON/OFF key to turn on the
Spectrum Analyzer. (This sets the instru-
ment to the factory preset state.)
5. Turn on the 10 MHz reference source and
the Anritsu MG3692A Synthesized Signal
Source.
6. Set the MG3692A output to 2000 MHz
with an RF output level of –30 dBm.
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
7. On the Spectrum Analyzer, press the
FREQ/SPAN key, then the CENTER soft key.
8. Enter 2000 and press the ENTER key to
set the center frequency to 2000 MHz.
9. Press the SPAN soft key, then enter 50
and press the kHz soft key to set the span
to 50 kHz.
10. Press the BW/SWEEP key, then press the
RBW soft key. Use the Up/Down Arrow
key to select 10 KHz, then press ENTER.
11. Turn off the Spectrum Analyzer, then
press and hold the 1, 5, and 9 keys and
press the ON/OFF key to enter Service
Mode.
12. Press the SYS key. Then, press the SER-
VICE soft key.
13. Press the SET TCXO soft key. Use the
Up/Down Arrow key to increase the
TCXO number, then press the ENTER key.
Observe if the response is closer to the
center of the display on spectrum ana-
lyzer.
14. Repeat the above step until the response
is centered on the display.
15. Turn the unit off, then back on to exit Ser-
vice Mode.
NOTE:
If increasing the TCXO number moves the re-
sponse further away from the center, decreas-
ing the TCXO number will move the response
in the opposite direction.
5.3. Phase Noise Verification
a. Equipment Required:
·Anritsu MG3692A Synthesized Signal
Source with options 2A, 4 and 15A, or
equivalent
·Anritsu 34RSN50 50 ohm adapter or
equivalent
·Anritsu 15NNF50-1.5C RF Coaxial Cable
or equivalent
b. Procedure:
1. Connect the output of the source to the
MS2711B RF Input.
2. Connect the external power supply
(Anritsu part number 40-115) to the
MS2711B.
3. Press and hold the ESCAPE/CLEAR key,
then press the ON/OFF key to turn on the
Spectrum Analyzer. (This sets the instru-
ment to the factory preset state.)
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
4. Set the MG3692A output to 1000 MHz,
CW with an RF output level of –30 dBm.
5. On the MS2711B, press the BW/SWEEP
key.
6. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 10 kHz. Press ENTER to set the
resolution bandwidth to 10 kHz and se-
lect BACK.
7. Press the VBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 3 kHz. Press ENTER to set the
video bandwidth to 3 kHz.
8. On the MS2711B, press the FREQ/SPAN
key and the CENTER soft key.
9. Enter 1000 and press the MHz soft key to
set the center frequency to 1000 MHz.
MS2711B HHSA MM 3

10. Press the SPAN soft key and enter 0.1.
Press the MHz soft key to set the span to
0.100 MHz.
11. Press the AMPLITUDE key.
12. Press the REF LEVEL soft key and enter
–27. Press the ENTER key to set the refer-
ence level to –27 dBm.
13. Press the MARKER key, then the M1 soft
key.
14. Press EDIT and enter 1000. Press the MHz
soft key to set the M1 marker frequency
to 1000 MHz.
15. Press the BACK soft key and the M2 soft
key.
16. Press EDIT and enter 1000.03. Press MHz
to set the M2 marker frequency to
1000.030 MHz (30 kHz higher than the
center frequency).
17. Press the DELTA (M2-M1) soft key.
18. Press the SINGLE/CONT key and read and
record the D2 reading.
19. Press the SINGLE/CONT key to read and
record five values, then calculate the av-
erage of the five recorded values.
20. Subtract 40 dB from the average value
and verify that the result is £–75 dBc/Hz.
(For example: –35 dBc measured –
40 dB = –75 dBc/Hz.)
NOTE
The measured value is converted to dBc/Hz us-
ing the following formula: ()
[]
dBc Hz measureddBc RBW
Hz
/log =- - 10 1
At 10 kHz RBW, ()
10 40
1
log RBW
Hz =,so
dBc Hz measureddBc/=- - 40.
21. Press the BACK soft key and the M3 soft
key.
22. Press the EDIT key and enter 999.970.
Press MHz to set the M3 marker frequency
to 999.970 MHz (30 kHz lower than the
center frequency).
23. Press the DELTA (M3-M1) soft key.
24. Press the SINGLE/CONT key. Read and re-
cord the D3 reading.
25. Press the SINGLE/CONT key to read and
record five values, then calculate the av-
erage of the five recorded values.
Subtract 40 dB from the average value and
verify that the result is £–75 dBc/Hz. (For ex-
ample: –35 dBc measured – 40 dB = –75
dBc/Hz.)
5.4. Second Harmonic Distortion Test
The following test can be used to verify the input re-
lated spurious response of the Spectrum Analyzer.
a. Equipment Required:
·Anritsu MG3692A Synthesized Signal
Source with options 2A, 4 and 15A, or
equivalent
·Anritsu 34RSN50 50 ohm adapter or
equivalent
·Anritsu 15NNF50-1.5C RF Coaxial Cable
or equivalent
·10 MHz Reference Standard
·50 MHz Low Pass Filter (Anritsu part
number 1030-96)
·BNC male to BNC male coaxial cable
b. Procedure:
1. Connect the 10 MHz reference source to
the Anritsu MG3692A Synthesized Signal
Source.
2. Connect one end of the 50 MHz Low Pass
Filter to the output of the source and the
other end to the Spectrum Analyzer RF
Input with the RF coaxial cable.
3. Connect the external power supply
(Anritsu part number 40-115) to the Site
Master.
4. On the MS2711B, press and hold the ES-
CAPE/CLEAR key, then press the ON/OFF
key to turn on the Spectrum Analyzer.
(This sets the instrument to the factory
preset state.)
5. Turn on the 10 MHz reference source and
the Anritsu MG3692A Synthesized Signal
Source.
6. Set the MG3692A output to 40 MHz CW,
with an RF output level of –30 dBm.
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
7. On the Spectrum Analyzer, press the AM-
PLITUDE key and the REF LEVEL soft key.
4 MS2711B HHSA MM

8. Enter –27 and press the ENTER key to set
the Reference Level to –27 dBm.
9. Press the SCALE soft key and enter 7then
press ENTER.
10. Press the FREQ/SPAN key and then the
CENTER soft key.
11. Enter 40 and press the MHz soft key to set
the center frequency to 40 MHz.
12. Press the SPAN soft key and enter 0.2.
Press the MHz soft key to set the span to
0.200 MHz.
13. Press the BW/SWEEP key.
14. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 10 kHz. Press ENTER to set the
resolution bandwidth to 10 kHz and select
BACK.
15. Press the VBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 3 kHz. Press ENTER to set the
video bandwidth to 3 kHz.
16. Press the MARKER key, then the M1 soft
key.
17. Select the EDIT soft key, then enter 40.
Press the MHz soft key to set M1 to 40
MHz .
18. On the MG3692A Synthesized Signal
Source, adjust the output level so that the
M1 reading of Spectrum Analyzer is –30
dBm at 40 MHz.
19. On the Spectrum Analyzer, press the
FREQ/SPAN key and then the CENTER soft
key.
20. Enter 80 and press the MHz soft key to set
the center frequency to 80 MHz.
21. Press the MARKER key and the M1 soft
key.
22. Select the EDIT soft key, then enter 80.
Press the MHz soft key to set M1 to 80
MHz .
23. Record the amplitude of the signal at M1
80 MHz:
Second Harmonic Level @ 80 MHz =____dBm
24. Convert this measured value to dBc using
the following formula:
Input Related Spurious Response (dBc) =
[Second Harmonic Level @ 80 MHz] +
30 dBm = ___ dBc
Specifications for this measurement are –45
dBc with –30 dBm into the first mixer.
5.5. Residual Spurious Response Test
The following test can be used to verify the residual
spurious response of the Spectrum Analyzer.
a. Equipment Required:
·Anritsu 28N50-2 or SM/PL 50 ohm Ter-
mination or equivalent
b. Procedure:
1. Connect the 50 ohm termination to the
Spectrum Analyzer RF Input.
2. On the Spectrum Analyzer, press and
hold the ESCAPE/CLEAR key, then press
the ON/OFF key to turn on the Spectrum
Analyzer. (This sets the instrument to the
factory preset state.)
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
3. On the Spectrum Analyzer, press the AM-
PLITUDE key and the REF LEVEL soft key.
4. Enter –75 and press the ENTER key to set
the Reference Level to –75 dBm.
5. Press the SCALE soft key and enter 5,
then press ENTER.
6. Press the BW/SWEEP key.
7. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 10 kHz. Press ENTER to set the
resolution bandwidth to 10 kHz and se-
lect BACK.
8. Press the VBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 100 Hz and press ENTER to set
the video bandwidth to 100 Hz.
9. Press the FREQ/SPAN key and the START
soft key.
10. Enter 500 and press the kHz soft key to set
the start frequency to 500 kHz.
11. Press the STOP soft key and enter 4, then
press the MHz soft key to set the stop fre-
quency to 4 MHz.
12. Wait until one full sweep is complete.
13. Press the MARKER key and then the M1
soft key.
MS2711B HHSA MM 5

14. Press the ON/OFF soft key and then the
MARKER TO PEAK soft key.
15. Record the M1 amplitude reading and
verify whether it is less than or equal to
–90 dBm.
NOTE
If a spur with an amplitude larger than –90
dBm occurs, wait another full sweep and ob-
serve whether the spur occurs at the same
point on the second sweep. If the spur does not
occur at the same point on the second sweep,
then the spur on the first sweep was not real.
16. Press the BW/SWEEP key.
17. Press the VBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 3 kHz and press ENTER to set the
video bandwidth to 3 kHz.
18. Press the FREQ/SPAN key and the START
soft key.
19. Enter 4and press the MHz soft key to set
the start frequency to 4 MHz.
20. Press the STOP soft key and enter 1000,
then press the MHz soft key to set the stop
frequency to 1000 MHz.
21. Wait until one full sweep is complete.
22. Press the MARKER key and then the M1
soft key.
23. Press the ON/OFF soft key and then the
MARKER TO PEAK soft key.
24. Record the M1 amplitude reading and
verify it is £–90 dBm.
25. Press the FREQ/SPAN key and the START
soft key.
26. Enter 1000 and press the MHz soft key to
set the start frequency to 1000 MHz.
27. Press the STOP soft key and enter 2000,
then press MHz soft key to set the stop fre-
quency to 2000 MHz..
28. Wait until one full sweep is complete.
29. Press the MARKER key and then the M1
soft key.
30. Press the ON/OFF soft key and then the
MARKER TO PEAK soft key.
31. Record the M1 amplitude reading and
verify it is £–90 dBm.
32. Press the FREQ/SPAN key and the START
soft key.
33. Enter 2000 and press the MHz soft key to
set the start frequency to 2000 MHz.
34. Press the STOP soft key and enter 3000,
then press the MHz soft key to set the stop
frequency to 3000 MHz.
35. Wait until one full sweep is complete.
36. Press the MARKER key and then the M1
soft key.
37. Press the ON/OFF soft key and then the
MARKER TO PEAK soft key.
38. Record the M1 amplitude reading and
verify it is £–90 dBm.
5.6. Resolution Bandwidth Accuracy Test
The following test can be used to verify the resolu-
tion bandwidth accuracy of the Site Master Spec-
trum Analyzer at four frequencies.
a. Equipment Required:
·Anritsu MG3692A Synthesized Signal
Source with options 2A, 4 and 15, or
equivalent
·Anritsu 34RSN50 50 ohm adapter or
equivalent
·Anritsu 15NNF50-1.5C RF Coaxial Cable
or equivalent
·10 MHz Reference Standard
·BNC male to BNC male coaxial cable
b. Procedure:
1. Connect the 10 MHz reference source to
the Anritsu MG3692A Synthesized Signal
Source.
2. Connect the output of the Anritsu
MG3692A Synthesized Signal Source to
the Spectrum Analyzer RF Input.
3. On the Spectrum Analyzer, press and
hold the ESCAPE/CLEAR key, then press
the ON/OFF key to turn on the Spectrum
Analyzer. (This sets the instrument to the
factory preset state.)
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
4. Set the MG3692A output to 1 GHz, with
an RF output level of –30 dBm.
5. On the Spectrum Analyzer, press the AM-
PLITUDE key and the REF LEVEL soft key.
6 MS2711B HHSA MM

6. Enter –27 and press the ENTER key to set
the Reference Level to –27 dBm.
7. Press the SCALE soft key and enter 3, then
press ENTER.
8. Press the FREQ/SPAN key and the CENTER
soft key.
9. Enter 1and press the GHz soft key to set
the center frequency to 1 GHz.
NOTE
The Measured Occupied BW value for each
RBW setting can be recorded in Table 1.
1 MHz RBW Test
10. Press the SPAN soft key, enter 5and press
the MHz soft key to set the span to 5 MHz.
11. Press the BW/SWEEP key.
12. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 1 MHz. Press ENTER to set the
resolution bandwidth to 1 MHz and select
BACK.
13. Press the VBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 3 kHz and press ENTER to set the
video bandwidth to 3 kHz.
14. Press the MEAS key, the OBW soft key, and
then the dBc soft key.
15. Press the MEASURE ON/OFF soft key and
read the displayed Meas Occ BW value.
The Meas Occ BW value should be ± 20%
of the RBW.
100 kHz RBW Test
16. Press the FREQ/SPAN key.
17. Press the SPAN soft key, enter 1and press
the MHz soft key to set the span to 1 MHz.
18. Press the BW/SWEEP key.
19. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 100 kHz. Press ENTER to set the
resolution bandwidth to 100 kHz and se-
lect BACK.
20. Press the MEAS key, the OBW soft key, and
then the dBc soft key.
21. Press the MEASURE ON/OFF soft key and
read the Meas Occ BW value. The Meas
Occ BW value should be ± 20% of the
RBW.
30 kHz RBW Test
22. Press the FREQ/SPAN key.
23. Press the SPAN soft key, enter .1 and press
the MHz soft key to set the span to 0.1
MHz.
24. Press the BW/SWEEP key.
25. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 30 kHz. Press ENTER to set the
resolution bandwidth to 30 kHz and se-
lect BACK.
26. Press the MEAS key, the OBW soft key, and
then the dBc soft key.
27. Press the MEASURE ON/OFF soft key and
read the displayed Meas Occ BW value.
The Meas Occ BW value should be ±20%
of the RBW.
10 kHz RBW Test
28. Press the FREQ/SPAN key
29. Press the SPAN soft key, enter .04 and
press the MHz soft key to set the span to
0.04 MHz.
30. Press the BW/SWEEP key.
31. Press the RBW soft key and then the
MANUAL soft key. Use the Up/down arrow
key to select 10 kHz. Press ENTER to set
the resolution bandwidth to 10 kHz and
select BACK.
32. Press the MEAS key, the OBW soft key, and
then the dBc soft key.
33. Press the MEASURE ON/OFF soft key and
read the displayed Meas Occ BW value.
The Meas Occ BW value should be ±35%
of the RBW.
MS2711B HHSA MM 7
RBW
Setting Lower Limit Measured Value Upper Limit
1 MHz 0.8 MHz 1.2 MHz
100 kHz 80 kHz 120 kHz
30 kHz 24 kHz 36 kHz
10 kHz 6.5 kHz 13.5 kHz
Table 1. RBW Check

5.7. Level Accuracy Test
This test verifies the level accuracy of the Spectrum
Analyzer.
a. Equipment Required:
·Anritsu MG3692A Synthesized Signal
Source, with options 2A, 4 and 15A
·Anritsu ML2430A-Series Power Meter or
equivalent
·Anritsu MA2442A High Accuracy Power
Sensor or equivalent
·Anritsu N241A50 Power Splitter or
equivalent
·Anritsu 34NN50A 50 ohm adapter or
equivalent
·Anritsu 34RSN50 50 ohm adapter or
equivalent
·Anritsu 15NNF50-1.5C RF Coaxial Cable
or equivalent
b. Procedure:
1. Connect the power sensor to the power
meter and calibrate the sensor.
2. Using the power splitter, coaxial cable
and adapters, connect the Spectrum Ana-
lyzer to the signal source and the power
sensor as shown in Figure 2.
3. Connect the external power supply
(Anritsu part number 40-115) to the Spec-
trum Analyzer.
4. On the Spectrum Analyzer, press and
hold the ESCAPE/CLEAR key, then press
the ON/OFF key to turn on the Spectrum
Analyzer. (This sets the instrument to the
factory preset state.)
5. Turn on the power meter and signal
source.
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
6. On the Spectrum Analyzer, press the
BW/SWEEP key.
7. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 10 kHz. Press ENTER to set the
resolution bandwidth to 10 kHz.
8. Press BACK, then the VBW soft key and
then the MANUAL soft key. Use the
Up/down arrow key to select 3 kHz. Press
ENTER to set the video bandwidth to 3
kHz.
9. Press BACK, then DETECTION, then AVER-
AGE.
10. Press the FREQ/SPAN key.
11. Press the SPAN soft key and enter .5, then
press the MHz key to set the span to .5
MHz.
12. Press the AMPLITUDE key.
13. Press the REF LEVEL soft key, enter 20 and
press the ENTER key to set the reference
level to +20 dBm.
14. Press the FREQ/SPAN key and the CENTER
soft key.
15. Enter 50 and press the MHz soft key to set
the center frequency to 50 MHz.
16. On the Anritsu ML2430A-Series Power
Meter, press the Sensor key and then the
CalFactor soft key. Select the FREQ soft key
and enter 50 MHz for the Input Signal
Frequency. This sets the power meter to
the proper power sensor cal factor. Press
the Sensor key to display the power read-
ing.
17. Set the MG3692A output to 50 MHz CW
and the power level to +10 dBm as indi-
cated on the power meter.
NOTE
To insure accuracy, set the output of the signal
source using the power meter reading. Do not
rely on the signal source display.
8 MS2711B HHSA MM
M o d u l a ti o n
L i n e O p e r a te
S t a n d b y
L e v e l
F r e q u e n c y
S y s t e m
O u t p u t
O n O f f
R F O u t p u t
5 0 9
C le a r
E n t r y
B a c
S p a c e
7 8 9
4 5 6
1 2 3
0
.
+ / -
MA2442A SENSOR
ML2438A POWER METER
MG369XA SOURCE
MS2711B
34NN50A
ADAPTER
N241A50
MS2711B
CONT
SINGLE
TRACE MEAS
SAVE
SETUP
RECALL
SETUP
LIMIT MARKER
SAVE
DISPLAY
RECALL
DISPLAY
PRINT
MODE FREQ / SPAN AMPLITUDE BW/SWEEP
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
/
12
4
56
78
90
3
+-
.
15NNF50-1.5C
34RSN50
ADAPTER
Figure 2. Measurement Accuracy Setup

18. Press the MARKER key, then the M1 soft
key.
19. Select the MARKER TO PEAK soft key to po-
sition the marker at the center of the re-
sponse for the test frequency.
NOTE
Table 2 can be used to record the results of
this test for future reference.
20. Verify that the M1 reading is ±2 dB maxi-
mum from the input signal.
21. Press the AMPLITUDE key.
22. Press the REF LEVEL soft key, enter 0and
press ENTER to set the reference level to 0
dBm.
23. Set the MG3692A power level to –10 dBm
as indicated on the power meter.
24. Verify that the M1 reading is ±2 dB maxi-
mum from the input signal.
25. Press the AMPLITUDE key.
26. Press the REF LEVEL soft key, enter –20
and press ENTER to set the reference level
to –20 dBm.
27. Set the MG3692A power level to –30 dBm
as indicated on the power meter.
28. Verify that the M1 reading is ±2dBmax
-
imum from the input signal.
29. Press the AMPLITUDE key.
30. Press the REF LEVEL soft key and enter
–40. Press ENTER to set the reference
level to –40 dBm.
31. Set the MG3692A power level to –50 dBm
as indicated on the power meter.
32. Verify that the M1 reading is ±2dBmax
-
imum from the input signal.
33. Repeat steps 14 through 32 for frequen-
cies of 500 MHz, 1000 MHz, 1500 MHz,
2000 MHz, 2500 MHz and 2950 MHz.
5.8. Displayed Average Noise Level
The following test can be used to verify the displayed
average noise level of the Spectrum Analyzer.
a. Equipment Required:
·Anritsu 28N50-2 or SM/PL 50 ohm Ter-
mination or equivalent
b. Procedure:
1. Connect the 50 ohm termination to the
Spectrum Analyzer RF Input.
2. On the Spectrum Analyzer, press and
hold the ESCAPE/CLEAR key, then press
the ON/OFF key to turn on the Spectrum
Analyzer. (This sets the instrument to the
factory preset state.)
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
3. On the Spectrum Analyzer, press the AM-
PLITUDE key and the REF LEVEL soft key.
4. Enter –75 and press the ENTER key to set
the Reference Level to –75 dBm.
5. Press the SCALE soft key and enter 5,
then press ENTER.
6. Press the BW/SWEEP key.
7. Press the DETECTION soft key, then press
the AVERAGE soft key, then select BACK.
MS2711B HHSA MM 9
Freq (MHz) Power Level
(dBm)
Ref Level
(dBm) M1 Reading
50 +10
–10
–30
–50
+20
+20
–20
–40
500 +10
–10
–30
–50
+20
+20
–20
–40
1000 +10
–10
–30
–50
+20
+20
–20
–40
1500 +10
–10
–30
–50
+20
+20
–20
–40
2000 +10
–10
–30
–50
+20
+20
–20
–40
2500 +10
–10
–30
–50
+20
+20
–20
–40
2950 +10
–10
–30
–50
+20
+20
–20
–40
Table 2. Level Accuracy Test Results

8. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 10 kHz. Press ENTER to set the
resolution bandwidth to 10 kHz and select
BACK.
9. Press the VBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 100 Hz and press ENTER to set the
video bandwidth to 100 Hz.
10. Press the FREQ/SPAN key and the START
soft key.
11. Enter 100 and press the kHz soft key to set
the start frequency to 100 kHz.
12. Press the STOP soft key and enter 500,
then press the kHz soft key to set the stop
frequency to 500 kHz.
13. Wait until a full sweep is complete.
14. Press the MARKER key and then press the
M1 soft key.
15. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
it is £–80 dBm.
16. Press the FREQ/SPAN key and the START
soft key.
17. Enter 500 and press the kHz soft key to set
the start frequency to 500 kHz.
18. Press the STOP soft key and enter 4, then
press the MHz soft key to set the stop fre-
quency to 4 MHz.
19. Wait until a full sweep is complete.
20. Press the MARKER key and then press the
M1 soft key.
21. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
it is £–95 dBm.
22. Press the BW/SWEEP key.
23. Press the VBW soft key, and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 3 kHz, and press ENTER to set the
video bandwidth to 3 kHz.
24. Press the FREQ/SPAN key and the START
soft key.
25. Enter 4and press the MHz soft key to set
the start frequency to 4 MHz.
26. Press the STOP soft key and enter 1000,
then press the MHz soft key to set the stop
frequency to 1000 MHz.
27. Wait until a full sweep is complete.
28. Press the MARKER key and then press the
M1 soft key.
29. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
it is £–95 dBm.
30. Press the FREQ/SPAN key and the START
soft key.
31. Enter 1000 and press the MHz soft key to
set the start frequency to 1000 MHz.
32. Press the STOP soft key and enter 2000
and press the MHz soft key to set the stop
frequency to 2000 MHz.
33. Wait until a full sweep is complete.
34. Press the MARKER key and then press the
M1 soft key.
35. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
it is £–95 dBm.
36. Press the FREQ/SPAN key and the START
soft key.
37. Enter 2000 and press the MHz soft key to
set the start frequency to 2000 MHz.
38. Press the STOP soft key and enter 3000,
then press the MHz soft key to set the stop
frequency to 3000 MHz.
39. Wait until a full sweep is complete.
40. Press the MARKER key and then press the
M1 soft key.
41. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
it is £–95 dBm.
5.9. Dynamic Range Test
This test can be used to verify the dynamic range of
the Spectrum Analyzer.
a. Equipment required:
·Two Anritsu MG3692A Synthesized Sig-
nal Sources with options 2A, 4 and 15A,
or equivalent
·Anritsu N241A50 Power Splitter or
equivalent
·Anritsu 34NN50A 50 ohm adapter or
equivalent
·Anritsu 34RSN50 50 ohm adapter or
equivalent
·Two Anritsu 15NNF50-1.5C RF Coaxial
Cables or equivalent
10 MS2711B HHSA MM

b. Procedure:
1. Connect the output of the Power Splitter
to the RF In port of the Spectrum Ana-
lyzer.
2. Connect the output of both signal sources
to the input of the Power Splitter and
turn on both sources.
3. On the Spectrum Analyzer, press and
hold the ESCAPE/CLEAR key, then press
the ON/OFF key to turn on the Spectrum
Analyzer. (This sets the instrument to the
factory preset state.)
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
4. Set the center frequency of the first
source to 1.0 GHz, and the center fre-
quency of the second source to 1.2 GHz.
5. On the Spectrum Analyzer, press the
FREQ/SPAN key.
6. Press the CENTER soft key, enter 1100,
then press the MHz soft key to set the cen-
ter frequency to 1100 MHz.
7. Press the SPAN soft key and enter 500,
then press the MHz key to set the span to
500 MHz.
8. Press the AMPLITUDE key and then the
REF LEVEL soft key.
9. Enter –20 and then press the ENTER key
to set the reference level to –20 dBm.
10. Press the BW/SWEEP key.
11. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 30 kHz, the press ENTER to set the
resolution bandwidth to 30 kHz.
12. Press BACK, then the VBW soft key and
then the MANUAL soft key. Use the
Up/down arrow key to select 30 kHz, then
press ENTER to set the video bandwidth to
30 kHz.
13. Adjust the signal levels of both signal
sources so that both signal peaks are at
–20 dBm as indicated on the Spectrum
Analyzer display.
14. Refer to Steps 10-12 above and set the
RBW to 10 kHz and the VBW to 1 kHz.
15. When the sweep is complete, reduce the
power level of the second source signal to
below –85 dBm and verify that the signal
is visible at below –85 dBm.
5.10. Power Monitor (Option 5) Verification
If the Power Monitor is installed in the Spectrum
Analyzer, the following test can be used to verify the
accuracy of the power measurements. Measurement
calibration of the Spectrum Analyzer is not required
for this test.
a. Equipment Required:
·RF Detector, 10 MHz to 20 GHz,
Anritsu 560-7N50B
·10 dB Attenuator, Weinschel 1-10
·30 dB Attenuator, Weinschel 1-30
·RF Reference Source, 0.050 GHz,
Anritsu MA2418A
·DC Power Supply, Anritsu 2000-933
b. Procedure
1. Connect the DC power supply to the
MA2418A Reference Source. (Refer to Fig-
ure 3).
2. Connect the MA2418A Reference Source
to the input of the 560-7N50B RF detec-
tor.
3. Connect the RF Detector output to the RF
Detector input of the MS2711B Spectrum
Analyzer.
4. Connect the DC power supply to the ap-
propriate line voltage to supply power to
the MA2418A Reference Source.
5. Press and hold the ESCAPE/CLEAR key,
then press the ON/OFF key to turn on the
Spectrum Analyzer. (This sets the instru-
ment to the factory preset state.)
6. Press the MODE soft key.
MS2711B HHSA MM 11
DC Power Supply 2000-933
Attenuators
Spectrum Analyzer w/ Option 5 Installed
MA2418A
Reference Source
560-7N50B
RF Detector
15-24VDC
20mA
MA2418A Reference Source
50 MHz, 50
0dBm W
MS2711A
CONT
SINGLE
TRACE MEAS
SAVE
SETUP
RECALL
SETUP
LIMIT MARKER
SAVE
DISPLAY
RECALL
DISPLAY
PRINT
MODE FREQ / SPAN AMPLITUDE BW/SWEEP
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
/
12
4
56
78
90
3
+-
.
Figure 3. Power Monitor Verification

7. Use the Up/Down Arrow key to highlight
POWER MONITOR, then press ENTER.
8. Press the ZERO soft key to zero the power
monitor.
When complete, ZERO ADJ:ON is displayed
in the message area.
9. Verify that the power monitor reading is
0.0 dBm ±1 dB.
10. Connect the output of the MA2418A Ref-
erence Source to the two attenuators so as
to add 40 dB of attenuation (Figure 3).
11. Connect the MA2418A Reference Source
and the attenuators to the input of the
560-7N50B RF detector.
12. Verify that the power monitor reading is
now –40.0 dBm ±2 dB.
5.11. Preamplifier (Option 8) Verification
If the Preamplifier (Option 8) is installed in the
Spectrum Analyzer, the following tests can be used
to verify the functionality of the Preamplifier.
5.11.1. Displayed Average Noise Level
This test verifies the performance of the
displayed average noise level with the
Preamplifier turned on.
a. Equipment Required:
·Anritsu 28N50-2 or SM/PL 50 ohm Ter-
mination or equivalent
b. Procedure:
1. Connect the 50 ohm termination to the
MS2711B RF Input.
2. On the Spectrum Analyzer, press and
hold the ESCAPE/CLEAR key, then press
the ON/OFF key to turn on the Spectrum
Analyzer. (This sets the instrument to the
factory preset state.)
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
3. On the MS2711B, press the AMPLITUDE
key and the REF LEVEL soft key.
4. Enter –75 and press the ENTER key to set
the Reference Level to –75 dBm.
5. Press the SCALE soft key and enter 5then
press ENTER.
6. Press the BW/SWEEP key.
7. Press the DETECTION soft key, then press
the AVERAGE soft key, then select BACK.
8. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 10 kHz.
9. Press ENTER to set the resolution band-
width to 10 kHz and press the BACK soft
key.
10. Press the VBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 100 Hz. Press ENTER to set the
video bandwidth to 100 Hz.
11. Press the MEAS key and then press the
PREAMP soft key to turn the Preamplifier
on.
12. Press the FREQ/SPAN key and the START
soft key.
13. Enter 1and press the MHz soft key to set
the start frequency to 1 MHz.
14. Press the STOP soft key and enter 4, then
press the MHz soft key to set the stop fre-
quency to 4 MHz.
15. Wait until a full sweep is complete.
16. Press the MARKER key and then press the
M1 soft key.
17. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
it is £–115 dBm.
18. Press the BW/SWEEP key.
19. Press the VBW soft key, and then the MAN-
UAL soft key. Use the up/down arrow key
to select 3 kHz. Press ENTER to set the
video bandwidth to 3 kHz.
20. Press the FREQ/SPAN key and the START
soft key.
21. Enter 4and press the MHz soft key to set
the start frequency to 4 MHz.
22. Press the STOP soft key and enter 1000,
then press the MHz soft key to set the stop
frequency to 1000 MHz.
23. Wait until a full sweep is complete.
24. Press the MARKER key and then press the
M1 soft key.
25. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
it is £–115 dBm.
26. Press the FREQ/SPAN key and the START
soft key.
12 MS2711B HHSA MM

27. Enter 1000 and press the MHz soft key to
set the start frequency to 1000 MHz.
28. Press the STOP soft key and enter 2000
and press the MHz soft key to set the stop
frequency to 2000 MHz.
29. Wait until a full sweep is complete.
30. Press the MARKER key and then press the
M1 soft key.
31. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
it is £–115 dBm.
32. Press the FREQ/SPAN key and the START
soft key.
33. Enter 2000 and press the MHz soft key to
set the start frequency to 2000 MHz.
34. Press the STOP soft key and enter 3000
then press MHz soft key to set the stop fre-
quency to 3000 MHz.
35. Wait until a full sweep is complete.
36. Press the MARKER key and then press the
M1 soft key.
37. Press the MARKER TO PEAK soft key. Re-
cord the M1 amplitude reading and verify
whether it is £–115 dBm.
5.11.2. Level Accuracy Test
This test verifies the level accuracy of the
spectrum analyzer with the Preamplifier
turned on.
a. Equipment Required:
·Anritsu MG3692A Synthesized Signal
Source, with options 2A, 4 and 15A
·Anritsu ML2430A-Series Power Meter or
equivalent
·Anritsu MA2442A High Accuracy Power
Sensor or equivalent
·Anritsu N241A50 Power Splitter or
equivalent
·Anritsu 34NN50A 50 ohm adapter or
equivalent
·Anritsu 34RSN50 50 ohm adapter or
equivalent
·Anritsu 34RKNF50 50 ohm adapter or
equivalent
·Anritsu 15NNF50-1.5C RF Coaxial Cable
or equivalent
·Weinschel 1-30 30 dB Fixed Attenuator
b. Procedure:
1. Connect the power sensor to the power
meter and calibrate the sensor.
2. Connect the power meter, source, sensor
and attenuator as shown in Figure 4.
3. On the power meter, press the Sensor key,
the Cal Factor soft key, and then the FREQ
soft key. Use the keypad to enter 50 MHz
as the input signal frequency, which sets
the power meter to the proper power sen-
sor cal factor.
4. Set the MG3692A output power level to 5
dBm.
5. Set the MG3692A output to 50 MHz CW.
6. Connect the power sensor to the RF out-
put of the MG3692A. Record the output
power level in Table 4.
7. Connect the 30 dB Fixed Attenuator be-
tween the RF output of the MG3692A and
the power sensor.
8. Enter the proper input signal frequency
into the power meter and record the mea-
sured value in Table 4.
9. Calculate the Attenuator Insertion Loss
using the following formula:
Attenuator Loss = Output Power @
Source – Output Power @ Attenuator
MS2711B HHSA MM 13
ML2438A POWER METER
MA2442A SENSOR
M o d u l a ti o n
L i n e O p e r a te
S t a n d b y
L e v e l
F r e q u e n c y
S y s t e m
O u t p u t
O n O f f
R F O u t p u t
5 0 9
C le a r
E n t r y
B a c
S p a c e
7 8 9
4 5 6
1 2 3
0
.
+ / -
MG369XA SOURCE
34RKNF50 ADAPTER Weinschel 1-30
ATTENUATOR
Figure 4. Power Meter Setup

10. Disconnect the 30 dB Fixed Attenuator.
11. Repeat steps 6 through 10 for frequencies
of 500 MHz, 1000 MHz, 1500 MHz, 2000
MHz, 2500 MHz and 2950 MHz.
12. Using the power splitter, coaxial cable,
adapters and fixed attenuator, connect
the MS2711B to the signal source and the
power sensor as shown in Figure 5.
13. Calculate the output power level required
at the power splitter end connected to the
power sensor to provide the desired power
level at the MS2711B RF Input. Record
the calculated value in Table 3.
14. Connect the external power supply
(Anritsu part number 40-115) to the
MS2711B.
15. On the Spectrum Analyzer, press and
hold the ESCAPE/CLEAR key, then press
the ON/OFF key to turn on the Spectrum
Analyzer. (This sets the instrument to the
factory preset state.)
16. Turn on the power meter and signal
source.
NOTE
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
17. Press the BW/SWEEP key.
18. Press the RBW soft key and then the MAN-
UAL soft key. Use the Up/down arrow key
to select 10 kHz. Press ENTER to set the
resolution bandwidth to 10 kHz.
19. Press BACK, then the VBW soft key and
then the MANUAL soft key. Use the
Up/down arrow key to select 3 kHz, then
press ENTER to set the video bandwidth to
3 kHz.
20. Press BACK, then DETECTION, then AVER-
AGE then select BACK.
14 MS2711B HHSA MM
M o d u l a ti o n
L i n e O p e r a te
S t a n d b y
L e v e l
F r e q u e n c y
S y s t e m
O u t p u t
O n O f f
R F O u t p u t
5 0 9
C le a r
E n t r y
B a c
S p a c e
7 8 9
4 5 6
1 2 3
0
.
+ / -
MA2442A SENSOR
ML2438A POWER METER
MG369XA SOURCE
M
S
2711B
15NNF50-1.5C
34RSN50
ADAPTER
34NN50A
ADAPTER
N241A50
Weinschel 1-30
ATTENUATOR
MS2711B
CONT
SINGLE
TRACE MEAS
SAVE
SETUP
RECALL
SETUP
LIMIT MARKER
SAVE
DISPLAY
RECALL
DISPLAY
PRINT
MODE FREQ / SPAN AMPLITUDE BW/SWEEP
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
/
12
4
56
78
90
3
+-
.
Figure 5. Level Accuracy Setup
Freq
(MHz) Output Power @ Source Output Power @ Attenuator Attenuator Insertion Loss
50
500
1000
1500
2000
2500
2950
Table 3. Pre-Amplifier Level Accuracy Test Settings
Freq
(MHz)
Desired
Test Level
(dBm)
Attenuator
Insertion Loss
Required Power
Meter Level
(dBm) *
50 –50
–55
–60
500 –50
–55
–60
1000 –50
–55
–60
1500 –50
–55
–60
2000 –50
–55
–60
2500 –50
–55
–60
2950 –50
–55
–60
* Required Power Meter Level = Desired Test Level +
Attenuator Insertion Loss
Table 4. Attenuator Characterization

21. Press the MEAS key and then press the
PREAMP soft key to turn the Preamplifier
on.
22. Press the FREQ/SPAN key.
23. Press the SPAN soft key and enter .5, then
press the MHz key to set the span to .5
MHz.
24. Press the AMPLITUDE key.
25. Press the REF LEVEL soft key and enter
–40 and press the ENTER key to set the
reference level to –40 dBm.
26. Press the FREQ/SPAN key and the CENTER
soft key.
27. Enter 50 and press the MHz soft key to set
the center frequency to 50 MHz.
28. On the power meter, press the Sensor key
and then the CalFactor soft key. Press the
FREQ soft key, then use the keypad to en-
ter 50 MHz for the Input signal Fre-
quency. This sets up the power meter to
use the proper power sensor Cal Factor.
Press the Sensor key to display the power
reading.
29. Set the MG3692A output to 50 MHz CW
and the power level to the value recorded
in the Required Power Meter Level col-
umn of Table 4 for –50 dBm as indicated
on the power meter.
NOTE
To insure accuracy, set the output of the signal
source using the power meter reading. Do not
rely on the signal source display.
30. On the MS2711B, press the MARKER key,
then the M1 soft key.
31. Select the MARKER TO PEAK soft key to po-
sition the marker at the center of the re-
sponse for the test frequency.
32. Verify that the M1 reading is ±2 dB maxi-
mum from the input signal.
33. Press the AMPLITUDE key.
34. Press the REF LEVEL soft key and enter
–45 and press the ENTER key to set the
reference level to –45 dBm.
35. Set the MG3692A power level to to the
value recorded in the Required Power Me-
ter Level column of Table 3 for –55 dBm
as indicated on the power meter.
36. Verify that the M1 reading is ±2 dB maxi-
mum from the input signal.
37. Press the AMPLITUDE key.
38. Press the REF LEVEL soft key and enter
–50. Press ENTER to set the reference level
to –50 dBm.
39. Set the MG3692A power level to to the
value recorded in the Required Power Me-
ter Level column of Table 3 for –60 dBm
as indicated on the power meter.
40. Verify that the M1 reading is ±2dBmax
-
imum from the input signal.
41. Repeat steps 24 through 40 for frequen-
cies of 500 MHz, 1000 MHz, 1500 MHz,
2000 MHz, 2500 MHz and 2950 MHz.
MS2711B HHSA MM 15
Freq
(MHz)
Power
Level
(dBm)
MS2711B
Ref Level
(dBm) M1 Reading
50 –50
–55
–60
–40
–45
–50
500 –50
–55
–60
–40
–45
–50
1000 –50
–55
–60
–40
–45
–50
1500 –50
–55
–60
–40
–45
–50
2000 –50
–55
–60
–40
–45
–50
2500 –50
–55
–60
–40
–45
–50
2950 –50
–55
–60
–40
–45
–50
Table 5. Preamplifier Level Accuracy Test Results

5.12. Tracking Generator (Option 20) Verifica-
tion
If the Tracking Generator (Option 20) is installed in
the Spectrum Analyzer, the following tests can be
used to verify the functionality of the tracking gener-
ator.
5.12.1. Output Level Accuracy Test
This test verifies the output level accu-
racy of the tracking generator.
a. Equipment Required:
·Anritsu ML2430A Series Power Meter
·Anritsu MA2442A High Accuracy Power
Sensor
b. Procedure:
1. Connect the external power supply
(Anritsu part number 40-115) to the
MS2711B.
2. On the Spectrum Analyzer, press and
hold the ESCAPE/CLEAR key, then press
the ON/OFF key to turn on the Spectrum
Analyzer. (This sets the instrument to the
factory preset state.)
3. Press the ON/OFF key to turn off the in-
strument.
4. Press and hold the 1,5, and 9keys, then
press the ON/OFF key to turn on the Spec-
trum Analyzer in the service mode.
NOTE:
Before continuing, allow a 30-minute warm up
for the internal circuitry to stabilize.
5. Press the MODE key. Use the up/down ar-
row key to select TRACKING GENERATOR
and press the ENTER key.
6. Press the SYS key.
7. Press the SERVICE soft key, then the TG
soft key and then the TG POWER STATE
soft key twice to switch the state to ON.
8. Press the FREQ/SPAN key.
9. Press the SPAN and then the ZERO soft
keys.
10. Connect the Power Sensor to the Power
Meter Calibrator output.
11. On the Power Meter, press the Cal/Zero
key and then the Zero/Cal soft key. Wait
until the Power Meter completes the zero-
ing of the Power Sensor.
12. Disconnect the Power Sensor from the
Power Meter Calibrator output and con-
nect it to the RF Out connector of the
MS2711B Spectrum Analyzer.
13. On the Power Meter, press the Sensor key
and then the CalFactor soft key.
14. Press the FREQ soft key, then use the key-
pad to enter 10 MHz for the Input signal
Frequency. This set up the Power Meter
to use the proper Power Sensor Cal Fac-
tor.
15. Press the Sensor key to display the mea-
surement reading.
16. On the Spectrum Analyzer, press the
FREQ/SPAN key and then the CENTER soft
key.
17. Enter 10 and press the MHz soft key.
18. Press the AMPLITUDE key and then the TG
OUTPUT LEVEL soft key.
19. Enter –50 and the press the ENTER key to
set the tracking Generator output power
level to –50 dBm.
20. On the power meter, verify that the read-
ing is ±4 dB maximum from the set
power level.
21. On the Spectrum Analyzer, press the TG
OUTPUT LEVEL soft key. Enter –40 and
press the ENTER key. This sets the track-
ing generator power output level to –40
dBm.
22. On the power meter, verify that the read-
ing is ±1.5 dB maximum from the set
power level.
23. On the Spectrum Analyzer, press the TG
OUTPUT LEVEL soft key. Enter –30 and
press the ENTER key. This sets the track-
ing generator power output level to –30
dBm.
24. On the power meter, verify that the read-
ing is ±1.5 dB maximum from the set
power level.
25. On the Spectrum Analyzer, press the TG
OUTPUT LEVEL soft key. Enter –20 and
press the ENTER key. This sets the track-
ing generator power output level to –20
dBm.
16 MS2711B HHSA MM