Anritsu Spectrum Master MS2711D User manual

Spectrum Master
Model MS2711D
Spectrum Analyzer
MAINTENANCE MANUAL
490 JARVIS DRIVE MORGAN HILL, CA 95037-2809 P/N: 10580-00099
REVISION: -
PRINTED:-8/< 201
COPYRIGHT 2004-201ANRITSU CO.
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Table of Contents
1. Introduction ...........................................1
2. Description ............................................1
3. Spectrum Analyzer Frequency Accuracy ............................1
4. Spectrum Analyzer Phase Noise Verification..........................2
5. Spectrum Analyzer Second Harmonic Distortion Test.....................3
6. Spectrum Analyzer Residual Spurious Response Test .....................4
7. Spectrum Analyzer Resolution Bandwidth Accuracy Test...................6
8. Spectrum Analyzer Measurement Accuracy Verification ...................9
9. Power Monitor Verification (Option 5).............................17
10. Bias Tee (Option 10) Verification ...............................19
11. Bias Tee Verification (Option 10A) ..............................19
12. Transmission Measurement Verification (Option 21) ....................21
13. Power Meter Verification (Option 29) ............................23
14. FCN4760 Frequency Converter Verification.........................25
15. Battery Pack Removal and Replacement...........................31
16. Battery Information......................................33
17. Front Panel Assembly Removal and Replacement......................34
18. LCD Assembly Replacement .................................36
19. Key Pad PCB Replacement ..................................37
20. Key Pad Membrane Replacement ..............................38
21. Main PCB Assembly Replacement ..............................38
22. Option 5 Power Monitor PCB Assembly Replacement ...................40
23. Accessories and Replaceable Parts ..............................41
24. Customer Service .......................................43
Spectrum Master MM i
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1. Introduction
This manual provides maintenance instructions for the Spectrum Master Model MS2711D Spectrum An-
alyzer. It describes the product and provides performance verification procedures, parts replacement pro-
cedures, and a replaceable parts list.
2. Description
The Spectrum Master MS2711D is a handheld spectrum analyzer with optional power meter (Option 29)
and transmission measurement (Option 21) capabilities.
The following sections contain tests that can be used to verify the performance of the Spectrum Master
Model MS2711D.
3. Spectrum Analyzer Frequency Accuracy
The following test can be used to verify the CW frequency accuracy of the Spectrum Master.
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 RF Input of the Spectrum Master.
3. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
4. Press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to turn on the Spectrum Mas-
ter. (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 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. 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 ENTER to set the center frequency to 2000 MHz.
11. Press the Span soft key, enter 20, and press the kHz soft key to set the span to 20 kHz.
12. Confirm that the RBW is 100 Hz, and the VBW is 30 Hz. If adjustment of the RBW and VBW are
required:
(a) Press the BW/SWEEP key and the Bandwidth soft key.
(b) Press the RBW Manual soft key and use the Up/Down arrow key to select 100 Hz. Press ENTER
to set the resolution bandwidth to 100 Hz.
(c) Press the VBW Manual soft key and use the Up/Down arrow key to select 30 Hz. Press ENTER to
set the video bandwidth to 30 Hz.
13. Press the MARKER key, then the M1 soft key.
14. 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.
Spectrum Master MM 1
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4. Spectrum Analyzer Phase Noise Verification
This test can be used to verify the phase noise of the Spectrum Master.
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 Spectrum Master RF Input.
2. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
3. Press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to turn on the Spectrum Mas-
ter. (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 1000 MHz CW, with an RF output level of –30 dBm.
5. Press the BW/SWEEP key and the Bandwidth soft key.
6. Press the RBW Manual soft key and use the Up/Down arrow key to select 1 kHz. Press ENTER to
set the resolution bandwidth to 1 kHz.
7. Press the VBW Manual soft key and use the Up/Down arrow key to select 30 Hz. Press ENTER to
set the video bandwidth to 30 Hz.
8. Press the FREQ/SPAN key and the CENTER soft key.
9. Enter 1000 and press the ENTER key to set the center frequency to 1000 MHz.
10. Press the SPAN soft key and enter 0.1. Press the ENTER 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 ENTER to set the reference level to –27 dBm.
13. Press the MARKER key, then the M1 soft key.
14. Press EDIT and enter 1000. Press ENTER 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 ENTER to set the M2 marker frequency to 1000.03 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 average of the five
recorded values.
20. Subtract 30 dB from the average value and verify that the result is £–75 dBc/Hz. (For example:
–45 dBc measured – 30 dB = –75 dBc/Hz.)
NOTE: The measured value is converted to dBc/Hz using the following formula:
()
[]
dBc Hz measured dBc RBW
Hz
/log =- - 10 1
At 1 kHz RBW, ()
10 30
1
log
RBW
Hz =,sodBc Hz measured dBc/=- - 30.
21. Press the BACK soft key and the M3 soft key.
22. Press the EDIT key and enter 999.97. Press MHz to set the M3 marker frequency to 999.97 MHz
(30 kHz lower than the center frequency).
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23. Press the DELTA (M3-M1) soft key.
24. Press the SINGLE/CONT key. Read and record the D3 reading.
25. Press the SINGLE/CONT key to read and record five values, then calculate the average of the five
recorded values.
26. Subtract 30 dB from the average value and verify that the result is £–75 dBc/Hz. (For example:
–45 dBc measured – 30 dB = –75 dBc/Hz.)
5. Spectrum Analyzer Second Harmonic Distortion Test
The following test can be used to verify the input related spurious response of the Spectrum Master.
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 Master RF Input with the coaxial cable.
3. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
4. On the Spectrum Master, press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to
turn on the Spectrum Master. (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. Press the AMPLITUDE 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 7then press ENTER.
10. Press the Atten/Preamp soft key and then the Manual soft key.
11. Enter 0 and press ENTER to set the attenuation to 0 dB.
12. Press the FREQ/SPAN key and then the Center soft key.
13. Enter 40 and press the MHz soft key to set the center frequency to 40 MHz.
14. Press the Span soft key and enter 0.2. Press the MHz soft key to set the span to 0.200 MHz.
15. Press the BW/SWEEP key and the Bandwidth soft key.
16. Press the RBW Manual soft key and use the Up/Down arrow key to select 10 kHz. Press ENTER to
set the resolution bandwidth to 10 kHz.
17. Press the VBW Manual soft key and use the Up/Down arrow key to select 3 kHz. Press ENTER to
set the video bandwidth to 3 kHz.
18. Press the MARKER key, then the M1 soft key.
19. Select the Edit soft key, then enter 40. Press the MHz soft key to set M1 to 40 MHz .
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20. On the MG3692A Synthesized Signal Source, adjust the output level so that the M1 reading of
Spectrum Master is –30 dBm at 40 MHz.
21. On the Spectrum Master, press the FREQ/SPAN key and then the Center soft key.
22. Enter 80 and press the MHz soft key to set the center frequency to 80 MHz.
23. Press the MARKER key and the M1 soft key.
24. Select the Edit soft key, then enter 80. Press the MHz soft key to set M1 to 80 MHz .
25. Record the amplitude of the signal at M1 80 MHz:
Second Harmonic Level @ 80 MHz = ________ dBm
26. 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.
6. Spectrum Analyzer Residual Spurious Response Test
The following test can be used to verify the residual spurious response of the Spectrum Master. This test
is performed using the positive peak detection mode.
a. Equipment Required:
·Anritsu 28N50-2 or SM/PL 50 ohm Termination or equivalent
b. Procedure:
1. Connect the 50 ohm termination to the Spectrum Master RF Input.
2. On the Spectrum Master, press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to
turn on the Spectrum Master. (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. 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 5, then press ENTER.
6. Press the BW/SWEEP key and the Bandwidth soft key.
7. Press the RBW Manual soft key and use the Up/Down arrow key to select 10 kHz. Press ENTER to
set the resolution bandwidth to 10 kHz.
8. Press the VBW Manual soft key and use the Up/Down arrow key to select 3 kHz and press ENTER to
set the video bandwidth to 3 kHz.
9. Press the FREQ/SPAN key and the Start soft key.
10. Enter 100 and press the kHz soft key to set the start frequency to 100 kHz.
11. Press the Stop soft key and enter 10, then press the MHz soft key to set the stop frequency to 10
MHz.
12. Wait till one full sweep is complete.
13. Press the MARKER key and then the M1 soft key.
14. Press the Marker To Peak soft key.
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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 –80 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 second sweep, then the spur on the first sweep was not real.
16. Press the FREQ/SPAN key and the Start soft key.
17. Enter 10 and press the MHz soft key to set the start frequency to 10 MHz.
18. Press the Stop soft key and enter 1000, then press the MHz soft key to set the stop frequency to
1000 MHz.
19. Wait until one full sweep is complete.
20. Press the MARKER key and record the M1 amplitude reading and verify it is £–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 second sweep, then the spur on the first sweep was not real.
21. Press the FREQ/SPAN key and the Start soft key.
22. Enter 1000 and press the MHz soft key to set the start frequency to 1000 MHz.
23. Press the Stop soft key and enter 2000, then press the MHz soft key to set the stop frequency to
2000 MHz.
24. Wait until one full sweep is complete.
25. Press the MARKER key and record the M1 amplitude reading and verify it is £–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 second sweep, then the spur on the first sweep was not real.
26. Press the FREQ/SPAN key and the Start soft key.
27. Enter 2000 and press the MHz soft key to set the start frequency to 2000 MHz.
28. Press the Stop soft key and enter 3000, then press the MHz soft key to set the stop frequency to
3000 MHz.
29. Wait until one full sweep is complete.
30. Press the MARKER key and record the M1 amplitude reading and verify it is £–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 second sweep, then the spur on the first sweep was not real.
Spectrum Master MM 5
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7. Spectrum Analyzer Resolution Bandwidth Accuracy Test
The following test can be used to verify the resolution bandwidth accuracy of the Spectrum Master at dif-
ferent 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 Master
RF Input.
3. On the Spectrum Master, press and hold the ESCAPE/CLEAR key, then press the On/Off key to
turn on the Spectrum Master. (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. Press the AMPLITUDE 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.
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, page 8.
1 MHz RBW Test
10. Press the Span soft key, enter 1.5 and press the MHz soft key to set the span to 1.5 MHz.
11. Press the BW/SWEEP key and the Bandwidth soft key.
12. Press the RBW Manual soft key and use the Up/Down arrow key to select 1 MHz. Press ENTER to
set the resolution bandwidth to 1 MHz.
13. Press the VBW Manual soft key and use the Up/Down arrow key to select 3 kHz and press ENTER to
set the video bandwidth to 3 kHz and select BACK.
14. Press the MEAS key, the OBW soft key, the dBc soft key, and then the ENTER key.
15. Press the MEAS key, then the MARKER key. Press the M2 soft key and then the Delta (M2–M1) soft
key. The displayed D2 frequency should be ± 5% of the RBW.
300 kHz RBW Test
16. Press the FREQ/SPAN key.
17. Press the Span soft key, enter 450 and press the kHz soft key to set the span to 450 kHz.
18. Press the BW/SWEEP key and the Bandwidth soft key.
19. Press the RBW Manual soft key and use the Up/Down arrow key to select 300 kHz. Press ENTER to
set the resolution bandwidth to 300 kHz and select BACK.
20. Press the MEAS key and then the MARKER key.
21. Press the M2 soft key. The displayed D2 frequency should be ± 5% of the RBW.
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100 kHz RBW Test
22. Press the FREQ/SPAN key.
23. Press the Span soft key, enter 150 and press the kHz soft key to set the span to 150 kHz.
24. Press the BW/SWEEP key and the Bandwidth soft key.
25. Press the RBW Manual soft key and use the Up/Down arrow key to select 100 kHz. Press ENTER to
set the resolution bandwidth to 100 kHz and select BACK.
26. Press the MEAS key and then the MARKER key.
27. Press the M2 soft key. The displayed D2 frequency should be ± 5% of the RBW.
30 kHz RBW Test
28. Press the FREQ/SPAN key.
29. Press the Span soft key, enter 45 and press the kHz soft key to set the span to 45 kHz.
30. Press the BW/SWEEP key and the Bandwidth soft key.
31. Press the RBW Manual soft key and use the Up/Down arrow key to select 30 kHz. Press ENTER to
set the resolution bandwidth to 30 kHz and select BACK.
32. Press the MEAS key to measure the bandwidth, then press the MARKER key.
33. Press the M2 soft key. The displayed D2 frequency should be ± 5% of the RBW.
10 kHz RBW Test
34. Press the FREQ/SPAN key.
35. Press the Span soft key, enter 15 and press the kHz soft key to set the span to 15 kHz.
36. Press the BW/SWEEP key and the Bandwidth soft key.
37. Press the RBW Manual soft key and use the Up/Down arrow key to select 10 kHz. Press ENTER to
set the resolution bandwidth to 10 kHz and select BACK.
38. Press the VBW Manual soft key and use the Up/Down arrow key to select 30 Hz. Press ENTER to
set the video bandwidth to 30 Hz and select BACK.
39. Press the MEAS key, then the MARKER key.
40. Press the M2 soft key. The displayed D2 frequency should be ± 5% of the RBW.
3 kHz RBW Test
41. Press the FREQ/SPAN key.
42. Press the Span soft key, enter 4.5 and press the kHz soft key to set the span to 4.5 kHz.
43. Press the BW/SWEEP key and the Bandwidth soft key.
44. Press the RBW Manual soft key and use the Up/Down arrow key to select 3 kHz. Press ENTER to set
the resolution bandwidth to 3 kHz and select BACK.
45. Press the MEAS key to measure the bandwidth, then press the MARKER key.
46. Press the M2 soft key. The displayed D2 frequency should be ± 5% of the RBW.
1 kHz RBW Test
47. Press the FREQ/SPAN key.
48. Press the Span soft key, enter 1.5 and press the kHz soft key to set the span to 1.5 kHz.
49. Press the BW/SWEEP key and the Bandwidth soft key.
50. Press the RBW Manual soft key and use the Up/Down arrow key to select 1 kHz. Press ENTER to set
the resolution bandwidth to 1 kHz and select BACK.
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51. Press the MEAS key then the MARKER key.
52. Press the M2 soft key. The displayed D2 frequency should be ± 5% of the RBW.
300 Hz RBW Test
53. Press the FREQ/SPAN key.
54. Press the Span soft key, enter 450 and press the Hz soft key to set the span to 450 Hz.
55. Press the BW/SWEEP key and the Bandwidth soft key.
56. Press the RBW Manual soft key and use the Up/Down arrow key to select 1 kHz. Press ENTER to set
the resolution bandwidth to 300 Hz and select BACK.
57. Press the MEAS key then the MARKER key.
58. Press the M2 soft key. The displayed D2 frequency should be ± 5% of the RBW.
100 Hz RBW Test
59. Press the FREQ/SPAN key.
60. Press the Span soft key, enter 150 and press the Hz soft key to set the span to 150 Hz.
61. Press the BW/SWEEP key and the Bandwidth soft key.
62. Press the RBW Manual soft key and use the Up/Down arrow key to select 100 Hz. Press ENTER to
set the resolution bandwidth to 100 Hz and select BACK.
63. Press the MEAS key then the MARKER key.
64. Press the M2 soft key. The displayed D2 frequency should be ± 5% of the RBW.
8 Spectrum Master MM
RBW Setting Lower Limit Measured Value Upper Limit
1 MHz 0.95 MHz 1.05 MHz
300 kHz 285 kHz 315 kHz
100 kHz 95 kHz 105 kHz
30 kHz 28.5 kHz 31.5 kHz
10 kHz 9.5 kHz 10.5 kHz
3 kHz 2.85 kHz 3.15 kHz
1 kHz 0.95 kHz 1.05 kHz
300 Hz 285 Hz 315 Hz
100 Hz 95 Hz 105 Hz
Table 1. RBW Check
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8. Spectrum Analyzer Measurement Accuracy Verification
The tests in this section verify the level accuracy of the Spectrum Master. There are two parts to this
test:
·Level Accuracy with Frequency Test
·Level Accuracy with Power Test
Level Accuracy with Frequency Test
a. Equipment Required:
·Anritsu MG3692A Synthesized Signal Source, with options 2A, 4 and 15A
·Anritsu ML2438A Dual Channel Power Meter or equivalent
·Anritsu MA2442A High Accuracy Power Sensors or equivalent (2)
·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 1-10 10 dB Fixed Attenuator
b. Procedure
1. Turn on the power meter and signal source.
NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.
2. On the power meter, press the Channel key, the Setup soft key and then the CHANNEL soft key to
display Channel 2 setup menu. Press the INPUT key twice to set the Input Configuration to B.
Press the Sensor key to display both Sensor A and Sensor B readings.
3. Connect the power sensors to the power meter and calibrate the sensors.
4. Set the MG3692A output power level to 5 dBm.
5. Set the MG3692A output to 30 MHz CW.
6. On the power meter, press the Sensor key, the Cal Factor soft key, and then the FREQ soft key. Use
the keypad to enter 30 MHz as the input signal frequency, which sets the power meter to the
proper power sensor cal factor. Press the SENSOR key on the power meter to display the power
reading.
7. Connect Sensor A to the MG3692A output, measure the output power level and record the value
in column A of Table 2.
8. Disconnect Sensor A from the MG3692A output.
9. Connect the power splitter to the MG3692A output and Sensor B to one of the power splitter out-
puts. Install the 10 dB Fixed Attenuator to the other power splitter output and then connect Sen-
sor A to the end of the Attenuator. Refer to Figure 1.
10. Record the new sensor A reading in column B of Table 2.
11. Record the Sensor B reading in column D of Table 2.
12. Calculate the Splitter/Attenuator Combined Loss using the following formula and record the re-
sult in column C of Table 2: C=A–B
13. Calculate the Sensor B path Power Splitter Loss using the following formula and record the re-
sult in column E of Table 2: E=A–D
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14. Repeat steps 5 through 13 for 50 MHz, 550 MHz, 1000 MHz, 1244 MHz, 1411 MHz, 2000 MHz,
2512 MHz, 2850 MHz and 2925 MHz.
15. Calculate the desired Sensor B reading for 0 dBm and -39 dBm Test Power Level using the fol-
lowing formula: Desired Sensor B reading = Desired Test Power Level + C - E
10 Spectrum Master MM
M o d u la t io n
L in e O p e r a t e
S t a n d b y
Level
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 l e a r
E n t r y
a c k
S p a c e
7 8 9
4 5 6
1 2 3
0
.
+ / -
SENSOR B SENSOR A
A
B
ML2438A POWER METER
MG369XA SOURCE
15NNF50-1.5C
34RSN50
ADAPTER
N241A50 ATTENUATOR
Figure 1. Level Accuracy with Frequency Test Setup
ABCDE
Freq
(MHz)
Sensor A Reading @
Source Output
Sensor A Reading @
end of Attenuator
Splitter/Attenuator
Combined Loss
Sensor B Reading @
Power Splitter Output
Sensor B Path Power
Splitter Loss
30
50
550
1000
1244
1411
2000
2512
2850
2925
Table 2. Output Power Level
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16. Record the calculated results in Table 3.
17. Using the power splitter, coaxial cable, adapters and fixed attenuator, connect the Spectrum Mas-
ter to the signal source and the power sensor as shown in Figure 2.
18. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
19. On the Spectrum Master, press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to
turn on the Spectrum Master. (This sets the instrument to the factory preset state.)
20. Press the BW/SWEEP key and the Bandwidth soft key.
Spectrum Master MM 11
HOLD
RUN
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
LIMIT MARKER
SAVE
DISPLAY
RECALL
DISPLAY
PRINT
MODE FREQ/DIST
AMPLITUDE MEAS/DISP
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
/
12
4
56
78
90
3
+-
.
MT8212A
CellMaster
M o d u la t io n
L i n e O p e r a te
S t a n d b y
Level
F r e q u e n c y
S y s t e m
O u tp u t
O n O f f
R F O u t p u t
5 0 9
C le a r
E n tr y
a c k
S p a c e
7 8 9
4 5 6
1 2 3
0
.
+ / -
ML2438A POWER METER
MA2442A
MG3692A SOURCE
S332D
15NNF50-1.5C
34NN50A
ADAPTER
10 dB
ATTENUATOR
34RSN50 ADAPTER
N241A50
Figure 2. Level Accuracy Test Setup
Freq
(MHz)
Desired Sensor B reading for
0 dBm @ Attenuator output
Desired Sensor B reading for
–39 dBm @ Attenuator output
30
550
1000
1244
1411
2000
2512
2850
2925
Table 3. Level Accuracy with Frequency Test Setting
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21. Press the RBW Manual soft key and use the Up/Down arrow key to select 1 kHz. Press ENTER to set
the resolution bandwidth to 1 kHz.
22. Press the VBW Manual soft key and use the Up/Down arrow key to select 100 Hz. Press ENTER to
set the video bandwidth to 100 Hz.
23. Press the FREQ/SPAN key.
24. Press the Span soft key and enter .10, then press the MHz key to set the span to 0.10 MHz.
25. Press the AMPLITUDE key.
26. Press the Ref Level soft key, enter 10 and press the ENTER key to set the reference level to +10
dBm.
27. Press the FREQ/SPAN key and the Center soft key.
28. Enter 30 and press the MHz soft key to set the center frequency to 30 MHz.
29. On the Power Meter, press the Sensor key and then the CalFactor soft key. Select the FREQ soft key
and enter 30 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 reading.
30. Set the MG3692A output to 30 MHz CW. Adjust the source power level so that the power meter
displays the corresponding desired Sensor B reading for 0 dBm (as recorded in Table 3).
31. On the Spectrum Master, press the MARKER key, then the M1 soft key.
32. Select the Marker To Peak soft key to position the marker at the center of the response for the test
frequency.
33. Verify that the M1 reading is within the specification as shown in Table 4.
34. Repeat steps 27 to 33 for 550 MHz, 1000 MHz, 1244 MHz, 1411 MHz, 2000 MHz, 2512 MHz, and
2925 MHz.
35. Repeat steps 27 to 34 for a power level of –39 dBm.
NOTE: Change the reference level to –30 dBm.
12 Spectrum Master MM
Freq
(MHz) @ 0 dBm @ –39 dBm Specification
30 ±1.5 dB*
550 ±1.5 dB*
1000 ±1.5 dB*
1244 ±1.5 dB*
1411 ±1.5 dB*
2000 ±1.5 dB*
2512 ±1.5 dB
2925 ±1.5 dB
*±1 dB for units with serial number 405039 and below.
Table 4. Level Accuracy with Frequency
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Level Accuracy with Power Test
c. Equipment Required:
·Anritsu MG3692A Synthesized Signal Source, with options 2A, 4 and 15A
·Anritsu ML2438A Dual Channel Power Meter or equivalent
·Anritsu MA2442A High Accuracy Power Sensor or equivalent (Two each)
·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 1-10 10 dB Fixed Attenuator
·Weinschel 1-30 30 dB Fixed Attenuator
d. Procedure:
1. Use the recorded values for 50 MHz in Table 5, calculate the desired Sensor B Reading for Test
Power Level > –50 dBm at 50 MHz using the following formulas:
Desired Sensor B Reading = Test Power Level + C – E
2. Record the calculated results in Table 5.
3. Using the power splitter, coaxial cable, adapters and fixed attenuator, connect the Spectrum Mas-
ter to the signal source and the power sensor as shown in Figure 2.
4. On the 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 reading.
5. Connect the external power supply (Anritsu part number 40-168) to the Spectrum Master.
6. On the Spectrum Master, press and hold the ESCAPE/CLEAR key, then press the ON/OFF key to
turn on the Spectrum Master. (This sets the instrument to the factory preset state.)
7. Press the BW/SWEEP key and the Bandwidth soft key.
8. Press the RBW Manual soft key and use the Up/Down arrow key to select 1 kHz. Press ENTER to set
the resolution bandwidth to 1 kHz.
Spectrum Master MM 13
Test Power Level (dBm) @ 50 MHz Desired Sensor B Reading
+3
0
–11
–13
–19
–27
–32
–39
–49
–51
–53
–60
Table 5. Level Accuracy with Power Test Setting
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9. Press the VBW Manual soft key and use the Up/Down arrow key to select 100 Hz. Press ENTER to
set the video bandwidth to 100 Hz.
10. Press the FREQ/SPAN key.
11. Press the Span soft key and enter .10, then press the MHz soft key to set the span to 0.10 MHz.
12. Press the AMPLITUDE key.
13. Press the Ref Level soft key, enter 10 and press the ENTER key to set the reference level to +10
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. Set the MG3692A output to 50 MHz CW. Adjust the source power so that the power meter dis-
plays the corresponding desired Sensor B Reading for +3 dBm (as recorded in Table 5).
17. Press the MARKER key, then the M1 soft key.
18. Select the Marker To Peak soft key to position the marker at the center of the response for the test
frequency.
19. Verify that the M1 reading is within the specification from the input signal as shown in Table 7.
20. Repeat steps 15 through 20 for input levels of 0 dBm, –11 dBm, –13 dBm, –19 dBm, –27 dBm,
–32 dBm, –39 dBm and –49 dBm.
NOTE: Change the reference level as indicated in Table 7 for the corresponding test power level.
21. Disconnect the power splitter and attenuator from the Spectrum Master.
22. Set the MG3692A output power level to 5 dBm.
23. Connect sensor A to the MG3692A output, measure the output power level and record the value
in column A of Table 6.
24. Disconnect sensor A from the MG3692A output.
25. Connect the power splitter to the MG3692A output and connect Sensor B to one of the power
splitter outputs. Install the 30 dB fixed attenuator to the other power splitter output, and con-
nect Sensor A to the attenuator. Refer to Figure 1.
26. Record the new sensor A reading in column B of Table 6.
27. Record the Sensor B reading in column D of Table 6.
28. Calculate the Splitter/Attenuator Combined Loss using the following formula and record the re-
sult in column C of Table 6: C=A–B
29. Calculate the Sensor B path Power Splitter Loss using the following formula and record the re-
sult in column E of Table 6: E=A–D
30. Calculate the desired Sensor B Reading for Test Power Level < –50 dBm using the following for-
mulas: Desired Sensor B Reading = Test Power Level+C–E
31. Record the calculated results in Table 5.
14 Spectrum Master MM
ABCDE
Freq
(MHz)
Sensor A Reading @
Source Output
Sensor A Reading @
End of Attenuator
Splitter/Attenuator
Combined Loss
Sensor B Reading @
Pwr Splitter Output
Sensor B Path
Power Splitter Loss
50
Table 6. Output Power Level
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32. Using the power splitter, coaxial cable, adapters and 30 dB fixed attenuator, connect the Spec-
trum Master to the signal source and the power sensor as shown in Figure 3.
33. Adjust the MG3692A output power level so that the power meter displays the corresponding de-
sired Sensor B reading for –51 dBm (as recorded in Table 5).
34. Press the MARKER key, then the M1 soft key.
35. Select the Marker To Peak soft key to position the marker at the center of the response for the test
frequency.
36. Verify that the M1 reading is within the specification from the input signal as shown in Table 7.
37. Repeat steps 34 to 37 for Test Power Levels of –53 dBm and –60 dBm.
NOTE: Change the reference level as indicated in Table 7 for the corresponding test power level.
Spectrum Master MM 15
HOLD
RUN
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
LIMIT MARKER
SAVE
DISPLAY
RECALL
DISPLAY
PRINT
MODE FREQ/DIST
AMPLITUDE MEAS/DISP
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
/
12
4
56
78
90
3
+-
.
MT8212A
CellMaster
M o d u la t i o n
L i n e O p e r a t e
S t a n d b y
Level
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 l e a r
E n t r y
a c k
S p a c e
7 8 9
4 5 6
1 2 3
0
.
+ / -
SENSOR B
ML2438A POWER METER
MG369XA SOURCE
S332D
15NNF50-1.5C
34RSN50
ADAPTER
34NN50A
ADAPTER
N241A50
Weinschel 1-30
ATTENUATOR
Figure 3. Level Accuracy Setup, 30 dB Attenuator
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16 Spectrum Master MM
Input Power Level
(dBm)
Reference Level
(dBm)
Specification
(dB)*
Marker Reading
(dBm)
+3 +10 ±1.5
0 +10 ±1.5
–11 –10 ±1.5
–13 –10 ±1.5
–19 –10 ±1.5
–27 –20 ±1.5
–32 –30 ±1.5
–39 –30 ±1.5
–49 –40 ±1.5
–51 –40 ±1.5
–53 –50 ±1.5
–60 –50 ±1.5
*±1 dB for units with serial number 405039 and below.
Table 7. Level Accuracy with Power
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