Anritsu MS2711A User manual

MAINTENANCE MANUAL
MS2711A
Hand Held
Spectrum Analyzer
1. INTRODUCTION
This manual provides maintenance instructions for
the MS2711A 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 MS2711A 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 bandwidth. A simplified block diagram is pro-
vided in Figure 2.
4. PERFORMANCE VERIFICATION
PROCEDURES
The following procedures can be used to verify the
performance of the MS2711A Spectrum Analyzer.
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 1. MS2711A Hand Held Spectrum Analyzer
490 JARVIS DRIVE ·MORGAN HILL, CA 95037-2809 P/N: 10580-00050
REVISION B
PRINTED: JULY 2002
COPYRIGHT 2001-2002 ANRITSU CO.

4.1. 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 Sig-
nal Source.
2. Connect the output of the source to the
MS2711A RF Input.
3. Connect the external power supply
(Anritsu part number 40-115) to the
MS2711A.
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 Sig-
nal 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 MS2711A, 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.
2 MS2711A HHSA MM
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 2. MS2711A Spectrum Analyzer Block Diagram

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 EDIT
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.
14. Press the VBW soft key and then the EDIT
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.
4.2. 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
MS2711A RF Input.
2. Connect the external power supply
(Anritsu part number 40-115) to the
MS2711A.
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 MG3692Aoutput to 1000 MHz,
CW with an RF output level of –30 dBm.
5. On the MS2711A, press the BW/SWEEP
key.
6. Press the RBW soft key and then the EDIT
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 EDIT
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 MS2711A, 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.
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 ref-
erence 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.)
MS2711A HHSA MM 3

NOTE
The measured value is converted to dBc/Hz
using 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 fre-
quency 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
example: –35 dBc measured – 40 dB = –75
dBc/Hz.)
4.3. 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 Sig-
nal 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 MS2711A, 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 Sig-
nal 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.
8. Enter –27 and press the ENTER key to set
the Reference Level to –27 dBm.
9. Press the SCALE soft key and enter 7
then 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 EDIT
soft key. Use the Up/down arrow key to
select 10 kHz. Press ENTER to set the res-
olution bandwidth to 10 kHz and select
BACK.
15. Press the VBW soft key and then the EDIT
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.
4 MS2711A HHSA MM

17. Select the EDIT soft key, then enter 40.
Press the MHz soft key to set M1 to 40
MHz .
18. On the MG3692ASynthesized 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 us-
ing 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.
4.4. 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 EDIT
soft key. Use the Up/down arrow key to
select 10 kHz. Press ENTER to set the res-
olution bandwidth to 10 kHz and select
BACK.
8. Press the VBW soft key and then the EDIT
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.
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
observe whether the spur occurs at the
same point on the second sweep. If the spur
does not occur at the same point on the sec-
ond sweep, then the spur on the first sweep
was not real.
16. Press the BW/SWEEP key.
MS2711A HHSA MM 5

17. Press the VBW soft key and then the EDIT
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
frequency 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.
4.5. 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 Sig-
nal 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. 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.
6 MS2711A HHSA MM

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 EDIT
soft key. Use the Up/down arrow key to
select 1 MHz. Press ENTER to set the reso-
lution bandwidth to 1 MHz and select
BACK.
13. Press the VBW soft key and then the EDIT
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 EDIT
soft key. Use the Up/down arrow key to
select 100 kHz. Press ENTER to set the res-
olution bandwidth to 100 kHz and select
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 EDIT
soft key. Use the Up/down arrow key to
select 30 kHz. Press ENTER to set the res-
olution bandwidth to 30 kHz and select
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 EDIT
soft key. Use the Up/down arrow key to
select 10 kHz. Press ENTER to set the res-
olution 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.
MS2711A 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

4.6. 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 3.
3. Connect the external power supply
(Anritsu part number 40-115) to the
Spectrum 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 EDIT
soft key. Use the Up/down arrow key to
select 10 kHz. Press ENTER to set the res-
olution bandwidth to 10 kHz.
8. Press BACK, then the VBW soft key and
then the EDIT 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 refer-
ence 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 Sig-
nal Frequency. This sets the power meter
to the proper power sensor cal factor.
Press the Sensor key to display the
power reading.
8 MS2711A HHSA MM
MA2442A
SENSOR
ML2438A POWER METER
68047C SOURCE
MS2711A
15NNF50-1.5A
34NN50A
ADAPTER
34RSN50 ADAPTER
N241A50
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. Measurement Accuracy Setup

17. Set the MG3692Aoutput 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 read-
ing. Do not rely on the signal source dis-
play.
18. Press the MARKER key, then the M1 soft
key.
19. Select the MARKER TO PEAK soft key to
position the marker at the center of the
response 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 ±2dB
maximum 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 MG3692Apower level to –10
dBm as indicated on the power meter.
24. Verify that the M1 reading is ±2dB
maximum 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 MG3692Apower level to –30
dBm as indicated on the power meter.
28. Verify that the M1 reading is ±2dB
maximum 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 MG3692Apower level to –50
dBm as indicated on the power meter.
32. Verify that the M1 reading is ±2dB
maximum 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.
MS2711A 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

4.7. 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.
8. Press the RBW soft key and then the EDIT
soft key. Use the Up/down arrow key to
select 10 kHz. Press ENTER to set the res-
olution bandwidth to 10 kHz and select
BACK.
9. Press the VBW soft key and then the EDIT
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 ver-
ify 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 ver-
ify it is £–95 dBm.
22. Press the BW/SWEEP key.
23. Press the VBW soft key, and then the EDIT
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 ver-
ify 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.
10 MS2711A HHSA MM

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 ver-
ify 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 ver-
ify it is £–95 dBm.
4.8. 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
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
center 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 EDIT
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 EDIT soft key. Use the Up/down
arrow key to select 10 kHz, then press
ENTER to set the video bandwidth to 10
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.
MS2711A HHSA MM 11

4.9. 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
Figure 4).
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 MS2711A Spec-
trum 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.
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 dis-
played 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 4).
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..
12 MS2711A HHSA MM
DC Power Supply 2000-933
Attenuators
Spectrum Analyzer w/ Option 5 Installed
MA2418A
Reference Source
560-7N50B
RF Detector
15-24V DC
20 mA
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 4. Power Monitor Verification

5. BATTERY PACK REMOVAL AND
REPLACEMENT
This procedure provides instructions for removing
and replacing the Spectrum Analyzer battery pack.
NOTE
Procedures in this manual may apply to
many similar instruments. Photos and il-
lustrations used are representative and
may show instruments other than the
MS2711A Spectrum Analyzer.
1. With the Spectrum Analyzer standing up-
right on a stable surface, locate the battery
access door (Figure 5).
2. Lift up the access door handle and rotate it
90 degrees counterclockwise, as illustrated in
Figure 6.
3. Lift the door and remove, as illustrated in
Figure 7.
4. Grasp the battery lanyard and pull the bat-
tery straight up and out of the unit, as illus-
trated in Figure 8.
5. Replacement is the opposite of removal. Note
the orientation of the battery contacts, and
be sure to insert the new battery with the
contacts facing the rear of the unit (Figure
9).
MS2711A HHSA MM 13
BATTERY ACCESS DOOR
Figure 5. Battery Access Door Location
Figure 6. Rotate the Battery Access Door Handle
Figure 7. Removing the Battery Access Door
Figure 8. Removing the Battery
BATTERY CONTACTS
Figure 9. Battery Orientation

6. BATTERY INFORMATION
The following information relates to the care and
handling of the Spectrum Analyzer battery, and
NiMH batteries in general.
·The Nickel Metal Hydride (NiMH) battery sup-
plied with the Spectrum Analyzer is shipped in
a discharged state. Before using the Spectrum
Analyzer, the internal battery must first be
charged for three hours, either in the Spectrum
Analyzer or in the optional battery charger
(Anritsu part number: 2000-1029).
·Use only Anritsu approved battery packs.
·Recharge the battery only in the Spectrum Ana-
lyzer or in an Anritsu approved charger.
·With a new NiMH battery, full performance is
achieved after three to five complete charge and
discharge cycles.
·When the Spectrum Analyzer or the charger is
not in use, disconnect it from the power source.
·Do not charge batteries for longer than 24
hours; overcharging may shorten battery life.
·If left unused a fully charged battery will dis-
charge itself over time.
·Temperature extremes will affect the ability of
the battery to charge: allow the battery to cool
down or warm up as necessary before use or
charging.
·Discharge an NiMH battery from time to time
to improve battery performance and battery
life.
·The battery can be charged and discharged
hundreds of times, but it will eventually wear
out.
·The battery may need to be replaced when the
operating time between charging becomes no-
ticeably shorter than normal.
·Never use a damaged or worn out charger or
battery.
·Storing the battery in extreme hot or cold
places will reduce the capacity and lifetime of
the battery.
·Never short-circuit the battery terminals.
·Do not drop, mutilate or attempt to disassemble
the battery.
·Do not dispose of batteries in a fire!
·Batteries must be recycled or disposed of prop-
erly. Do not place batteries in household gar-
bage.
·Always use the battery for its intended purpose
only.
14 MS2711A HHSA MM
Figure 10. Spectrum Analyzer Battery

7. FRONT PANEL ASSEMBLY REMOVAL
AND REPLACEMENT
This procedure provides instructions for removing
and replacing the Spectrum Analyzer front panel as-
sembly. With the front panel assembly removed, the
LCD display, keypad PCB, keypad membrane, and
main PCB assemblies can be removed and replaced.
1. Place the Spectrum Analyzer face up on a
work surface.
2. Remove the four rubber corner bumpers by
carefully sliding the bumpers off of the case
corners (Figure 13).
3. With the bumpers removed, the access holes
for the case screws are revealed. Use a Phil-
lips screwdriver to remove the four screws
securing the two halves of the Spectrum An-
alyzer case together.
4. Carefully lift up on the right side (as viewed
from the front) of the front half of the case
and begin to separate the two halves.
CAUTION
Do not force or pull the two halves of the
case apart as there are delicate cables at-
tached between the two halves that must
be disconnected first.
5. Carefully depress the latch tab and discon-
nect the LCD display cable from J12 on the
main PCB.
6. Carefully disconnect the keypad interface ca-
ble from J1 on the main PCB.
7. Carefully disconnect the speaker cable from
J23 on the main PCB.
8. Carefully disconnect the LCD display
backlight cable from J15 on the main PCB.
9. Remove the front panel assembly.
10. Reverse the above steps to replace the front
panel assembly.
NOTE
The corner bumpers only mount one way.
That is, the raised area inside one end of
the bumper (Figure 13) is made to conform
to the contour of the front cover only.
MS2711A HHSA MM 15
Figure 11. Removing the Corner Bumpers
J23
J1 J15
J12
Figure 12. Spectrum Analyzer Front Panel Cable Con-
nections
RAISED AREA
Figure 13. Corner Bumper Detail

8. LCD ASSEMBLY REPLACEMENT
This procedure provides instructions for removing
and replacing the Liquid Crystal Display (LCD) once
the front panel assembly has been separated from
the Spectrum Analyzer.
1. Remove the front panel assembly as directed
in section 7.
2. Place the front panel assembly face down on
a protected work surface.
3. Remove the 14 Phillips screws that attach
the backing plate to the front panel assem-
bly.
4. Release the LCD display cable and speaker
cable from the retaining clips on the front
panel backing plate.
5. Remove the front panel backing plate, care-
fully feeding the LCD cable through the ac-
cess hole to avoid damage to the cable or
connector.
6. Remove the rubber cushion pad from the
LCD assembly and remove the assembly.
7. Reverse the above steps to install the re-
placement assembly.
9. KEY PAD PCB REPLACEMENT
This procedure provides instructions for removing
and replacing the key pad PCB.
1. Remove the front panel assembly as directed
in section 7.
2. Place the front panel assembly face down on
a protected work surface.
3. Remove the 14 Phillips screws that attach
the backing plate to the front panel assem-
bly.
4. Release the LCD display cable and speaker
cable from the retaining clips on the front
panel backing plate (Figure 14).
5. Remove the front panel backing plate, care-
fully feeding the LCD cable through the ac-
cess hole to avoid damage to the cable or con-
nector.
6. Remove the rubber cushion pad from the key
pad PCB and remove the PCB.
7. Reverse the above steps to install the re-
placement assembly. Take care to position
the speaker and speaker cable properly.
16 MS2711A HHSA MM
LCD RETAINER PLATE LCD CABLE CLAMP
SPEAKER CABLE CLAMPS
Figure 14. Front Panel Backing Plate
KEYPAD PCB
Figure 15. Front Panel Keypad PCB Location

10. KEY PAD MEMBRANE REPLACEMENT
This procedure provides instructions for replacing
the key pad membrane.
1. Remove the front panel assembly as directed
in section 7.
2. Remove the key pad PCB as directed in sec-
tion 9.
3. Remove the keypad membrane by gently
pulling the membrane up and out of the
holes in the front panel.
4. Reverse the above steps to install the re-
placement membrane.
11. MAIN PCB ASSEMBLY REPLACEMENT
This procedure provides instructions for replacing
the main PCB assembly with the connector panel at-
tached. The assembly consist of two PCBs (Control
and RF) which must be replaced together.
1. Remove the front panel assembly as directed
in section 7.
2. Disconnect the battery connector from J13 on
the main PCB.
3. Disconnect the semi-rigid coaxial cable from
the RF connector on the connector panel.
4. Remove the three PCB mounting screws and
remove the Control PCB assembly with the
connector panel attached.
5. Remove the three .25” standoffs and four
Phillips screws and remove the RF PCB.
6. Reverse the above steps to install the new
main PCB.
NOTE
The main PCB connector panel fits into
grooves in the two halves of the Spectrum
Analyzer case. Make sure the panel is cor-
rectly aligned with the grooves before reas-
sembling the two halves together.
MS2711A HHSA MM 17
KEYPAD MEMBRANE
Figure 16. Front Panel Keypad Membrane
PCB MOUNTING
SCREWS (3)
BATTERY
CONNECTOR
Figure 17. Control PCB
CONNECTOR P2 TO RF IN CONNECTOR
Figure 18. RF PCB

12. REPLACEABLE PARTS
Replaceable parts for the Model MS2711A Spectrum
Analyzer are listed below.
18 MS2711A HHSA MM
Part Number Description Qty
Accessories
10580-00048 User's Guide, MS2711A
Spectrum Analyzer 1
10580-00049 Programming Manual, MS2711A Spectrum Analyzer
(available on disk only) 1
2300-347 Software Tools, MS2711A
Spectrum Analyzer 1
40-115 Power Supply 1
2000-1029 Battery Charger
806-62 Cable Assy, Cig Plug, Female 1
800-441 Serial Interface Cable Assy 1
48258 Soft Carrying Case 1
Replaceable Parts
510-87 N-Connector 1
551-152 Option 05 Input Connector 1
15-102 Liquid Crystal Display Assy 1
633-27 Rechargeable Battery, NiMH 1
ND55001 MS2711A Logic, Digital Control
and SA PCB Assembly 1
ND55007 MS2711A Logic and Digital Control PCB Assembly
with Option 05 1
ND53250 Option 05 PCB Assembly 1
52737-3 Keypad PCB Assy 1
46649-3 Membrane Keypad, Main 1
52747 Coaxial Cable 1
ND56502 Speaker and Cable Assemb.y 1
Table 3. Replaceable Parts List
Part Number Description Qty
Hardware
900-861 Pan Head Screw, 4-20, 0.365 15
900-869 Screw, 4-40, 0.875 4
900-720 Screw, 4-40, 0.187 3
900-697 Screw, 4-40, 0.312 3
785-929 M-F Stand off, 4-40, 11/16 3
900-326 Kep Nut, 4-40, 0.187 8
790-516 Hole Plug, 0.6875L 1
790-42 Hole Plug, 0.625 1
761-79 Cap Vinyl, Black, round 1
Case Parts
46652-4 Top Case only 1
52727 Top Case w/ hardware 1
46653-1 Bottom Case only 1
46664 Bottom Case w/ hardware 1
48231-1 Battery Door 1
790-509
790-510
790-511
Battery Door Latch (3 pieces) 1
46655 Case Corner Bumpers 4
46662 LCD Retainer Plate 1
48241 Foam, LCD Corners 8
48278 Foam, LCD Window 1
46659 Foam, LCD Backing 1
46661 Foam, Keypad Backing 1
48246 Foam, Battery Door 1
48271 Foam, Battery Compartment 1
720-19 Cable Clamp 1
790-515 Spring, Battery Compartment 1
52733 ID Label, Model MS2711A 1

MS2711A HHSA MM 19
UNITED STATES
ANRITSU COMPANY
685 Jarvis Drive
Morgan Hill, CA 95037-2809
Telephone: [phone]
1-800-ANRITSU
FAX: [phone]
FRANCE
ANRITSU S.A
9 Avenue du Quebec
Zone de Courtaboeuf
91951 Les Ulis Cedex
Telephone: [phone]
FAX: [phone]
JAPAN
ANRITSU CORPORATION
1800 Onna Atsugi-shi
Kanagawa-Prf. 243 Japan
Telephone: [phone]
FAX: [phone]
ANRITSU COMPANY
10 New Maple Ave., Unit 305
Pine Brook, NJ 07058
Telephone: [phone], 1-800-ANRITSU
FAX: [phone]
GERMANY
ANRITSU GmbH
Grafenberger Allee 54-56
D-40237 Dusseldorf, Germany
Telephone: [phone]
FAX: [phone]
SINGAPORE
ANRITSU (SINGAPORE) PTE LTD.
6, New Industrial Road
#06-01/02, Hoe Huat Industrial Building
Singapore 536199
Telephone: [phone]
FAX: [phone]
ANRITSU COMPANY
1155 E. Collins Blvd
Richardson, TX 75081
Telephone: 1-800-ANRITSU
FAX: [phone]
INDIA
MEERA AGENCIES (P) LTD.
23 Community Centre
Zamprudpur, Kailish Colony Extension
New Delhi 110 048, India
Telephone: [phone]
FAX: [phone]
SOUTH AFRICA
ETECSA
12 Surrey Square Office Park
330 Surrey Avenue
Ferndale, Randburt, 2194
South Africa
Telephone: [phone]
FAX: [phone]
AUSTRALIA
ANRITSU PTY. LTD.
Unit 3, 170 Foster Road
Mt Waverley, VIC 3149
Australia
Telephone: [phone]
FAX: [phone]
ISRAEL
TECH-CENT, LTD.
Haarad St. No. 7, Ramat Haahayal
Tel-Aviv 69701
Telephone: [phone]
FAX: [phone]
SWEDEN
ANRITSU AB
Botivid Center
S-1585
Stockholm, Sweden
Telephone: [phone]
FAX: [phone]
BRAZIL
ANRITSU ELECTRONICA LTDA.
Praia de Botafogo, 440, Sala 2401
CEP22250-040, Rio de Janeiro, RJ, Brasil
Telephone: [phone]
FAX: [phone]
ITALY
ANRITSU Sp.A
Roma Office
Via E. Vittorini, 129
00144 Roma EUR
Telephone: [phone]
FAX: [phone]
TAIWAN
ANRITSU CO., LTD.
6F, No. 96, Section 3
Chien Kuo N. Road
Taipei, Taiwan, R.O.C.
Telephone: [phone]
FAX: [phone]
CANADA
ANRITSU INSTRUMENTS LTD.
215 Stafford Road, Unit 102
Nepean, Ontario K2H 9C1
Telephone: [phone]
FAX: [phone]
KOREA
ANRITSU CORPORATION
14F, Hyunjuk Bldg
832-41, Yeoksam Dong
Kangnam-Ku
Seoul Korea 135-080
Telephone: [phone]
FAX: [phone]
UNITED KINGDOM
ANRITSU LTD.
200 Capability Green
Luton, Bedfordshire
LU1 3LU, England
Telephone: [phone]
FAX: [phone]
Table 4. Anritsu Service Centers