Anritsu MS2024A Manual de usuario

MS2024A/MS2026A

VNA Master

MAINTENANCE MANUAL

P/N: 10580-00124

REVISION: A

PRINTED: APRIL 2006

490 JARVIS DRIVE

MORGAN HILL, CA 95037-2809

VNA Master MS202xA MM i

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3. Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

4. Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Port Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Return Loss Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Power Monitor (Option 5) Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Bias Tee (Option 10) Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

GPS (Option 31) Operational Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5. Battery Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6. Battery Pack Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7. Removal and Replacement Procedures for Internal Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Opening the VNA Master Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Removal and Replacement of the Option 5 Power Monitor PCB . . . . . . . . . . . . . . . . . . . . . 13

Removal and Replacement of the VNA Module Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Real Time Clock (RTC) Battery Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 15

Main PCB Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

LCD Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

LCD Backlight PCB Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Keypad Membrane and PCB Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Function Key Membrane and Switchpad Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8. Accessories and Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

9. ANRITSU Customer Service Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table of Contents

VNA Master MS202xA MM 1

1. Introduction

This manual provides maintenance instructions for the VNA Master MS202xA. It describes the product and provides

performance verification procedures, parts replacement procedures, and a replaceable parts list.

2. Description

The MS2024A and MS2026A VNA Masters are handheld Vector Network Analyzers designed to make accurate vector

corrected 1-port magnitude, phase, and fault location measurements and 1-path, 2-port magnitude and phase measure-

ments from 2 MHz to 6 GHz.

RF immunity rejection up to +17 dBm allows for accurate measurements in RF rich environments. More than 1000

traces and setups can be stored in internal memory and data can be transferred to a computer via Ethernet, USB, or mem-

ory card.

Frequency Ranges

MS2024A 2 MHz to 4 GHz

MS2026A 2 MHz to 6 GHz

3. Recommended Test Equipment

The following test equipment is recommended for use in testing and maintaining the VNA Master.

NOTE: Verify that the test equipment is operating properly before it is used.

Table 1. Recommended Test Equipment

Equipment Critical Specification Recommended Manufacturer/Model

Synthesizer Frequency: 1 GHz with options 2A, 4

(or 5), and 15A Anritsu Model MG3691A

Power Meter Power Range: –70 to +20 dBm Anritsu Dual Channel Model ML2437A

Power Sensor Frequency: 10 MHz to 18 GHz,

Range: –67 to +20 dB Anritsu Model MA2442D

Frequency Reference Frequency: 10 MHz Absolute Time Corp., Model 300

Power Splitter Frequency: DC to 18 GHz Weinschel Model 1870A

Adapter Frequency: 1 GHz

K(m) to N(f) Anritsu Model 34RKNF50

RF Coaxial Cable Frequency: DC to 6.0 GHz

N(m)-N(m), 50 Ohm Anritsu Model 15NN50-1.5C

RF Detector (for Option 5) Frequency: 10 MHz to 20 GHz Anritsu Model 560-7N50B

High Current Test Fixture

(for Option 10) Resistance: 40 Ohm

Power: 5 Watts Anritsu Model T2904

Low Current Test Fixture

(for Option 10) Resistance: 105 Ohm

Power: 1 Watt Anritsu Model T3377

Frequency Counter Frequency: 2 GHz Anritsu Model MF2412B

Open/Short Anritsu Part Number 22N50

Termination Frequency: DC to 18 GHz

Return Loss: 40 dB min Anritsu Model 28N50-2

Termination Frequency: DC to 18 GHz

Return Loss: 40 dB min Anritsu Model 28NF50-2

Offset Termination Frequency: DC to 6 GHz

Return Loss: 6 dB ± .35 dB Anritsu Model SC7424

Offset Termination Frequency: DC to 6 GHz

Return Loss: 20 dB ± 1.0 dB Anritsu Model SC7423

2 VNA Master MS202xA MM

4. Performance Verification

The following tests can be used to verify the performance or operation of the VNA Master.

4.1 Frequency Accuracy

The following test can be used to verify the CW frequency accuracy of the VNA Master. Measurement calibration of the

VNA is not required for this test.

Equipment Required:

• VNA Master External Power Supply, Anritsu Part Number 40-168

• Frequency Counter, Anritsu Model MF2412B

• RF Coaxial Cable, Anritsu Model 15NN50-1.5C

Procedure:

1. Connect the external power supply (Anritsu part number 40-168) to the VNA Master.

2. Press the On/Off key to turn on the VNA Master.

3. Press the Shift key, the Preset key (1), and then the Preset soft key to reset the instrument to the default start-

ing conditions.

4. Press the Measurement key, then press the S21 Transmission soft key. Verify that the Log Magnitude soft

key is selected (there will be a red dot on the key label). If not, select the Log Magnitude soft key.

5. Press the Shift key, then press the Sweep (3) key.

6. Verify that the RF Immunity is set to Normal (the word Normal will be underlined on the soft key label). If not,

press the RF Immunity soft key to set the instrument to Normal.

7. Press the Freq/Dist key, then press the Start Freq soft key.

8. Verify that the Start Frequency is set to 2 GHz. If not, enter 2then press the GHz soft key to set the Start Fre-

quency to 2 GHz.

9. Press the Stop Freq soft key.

10. Using the keypad, enter 2and press the GHz soft key to set the Stop Frequency to 2 GHz.

11. Connect the RF cable from the VNA Master RF Out test port to the RF Input1 connector on the Frequency

Counter.

12. Turn on the Frequency Counter and press the Preset key.

13. Verify that Frequency Counter reading is 2 GHz, ±50 KHz.

4.2 Port Isolation

The following test can be used to verify the transmission test port isolation. Measurement calibration of the VNA Master

is required for this test.

Equipment Required:

• 50 Ohm Termination, Anritsu Model 28N50-2

• 50 Ohm Termination, Anritsu Model 28NF50-2

• Open/Short, Anritsu Part Number 22N50

• VNA Master External Power Supply, Anritsu Part Number 40-168

• RF Coaxial Cable, Anritsu Model 15NN50-1.5C

Procedure:

1. Connect the external power supply (Anritsu part number 40-168) to the VNA Master.

2. Press the On/Off key to turn on the VNA Master.

NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.

VNA Master MS202xA MM 3

3. Press the Shift key, the Preset key (1), and then the Preset soft key to reset the instrument to the default start-

ing conditions.

4. Press the Measurement key, then press the S21 Transmission soft key. Verify that the Log Magnitude soft

key is selected (there will be a red dot on the key label). If not, select the Log Magnitude soft key.

5. Press the Shift key, then press the Sweep (3) key.

6. Verify that the RF Immunity is set to High (the word High will be underlined on the soft key label). If not, press

the RF Immunity soft key to set the instrument to High.

7. Press the Scale key, then press Reference Value soft key.

8. Use the keypad to enter -80, then press the dB soft key.

9. Press the Resolution Per Div soft key and use the keypad to enter 5, then press the dB soft key.

10. Press the Shift key, then press the Calibrate (2) key.

11. Verify that the Cal Type is set to 2-Port and the Cal Power is set to High. If not, select the soft key to change

the setting.

12. Press the Start Cal soft key and follow the on screen instructions to perform an OSL-THRU-ISOL calibration

using the 22N50 Open/Short, 28NF50-2 and 28NF50-2 Terminations, and the 15NN50-1.5C Test Port Exten-

sion Cable (refer to Figure 1).

NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.

Figure 1. OSL-Thru-ISOL Calibration Setup

LOAD

OPEN

LOAD

SHORT

RFOUT/REFLECTION

TEST PORT

EXTENSION CABLE

RF IN PORT

28NF50-2

28N50-2

4 VNA Master MS202xA MM

13. Disconnect the cable from the RF Out/Reflection Port, connect a 28NF50-2 Load to the cable, and connect a

28N50-2 Load to the RF Out/Reflection Port.

14. Press the Shift key, then press the Limit (6) key.

15. Press the On/Off soft key to set the limit line to On.

16. Press the Limit Edit soft key and verify that the frequency is set to 2 MHz.

17. Press the Amplitude soft key, use the keypad to enter -80, then press the dB soft key.

18. Press the Add Point soft key, then use the keypad to enter 3and press the GHz soft key.

19. Press the Amplitude soft key, use the keypad to enter -80, then press the dB soft key.

20. Press the Add Point soft key, then press the Frequency soft key.

21. Use the keypad to enter 3and press the GHz soft key.

22. Press the Amplitude soft key, use the keypad to enter -70, then press the dB soft key.

23. Press the Add Point soft key, then press the Frequency soft key.

24. Use the keypad to enter 5.5 and press the GHz soft key.

25. Press the Amplitude soft key, use the keypad to enter -70, then press the dB soft key.

26. Press the Add Point soft key, then press the Frequency soft key.

27. Use the keypad to enter 5.5 and press the GHz soft key.

28. Press the Amplitude soft key, use the keypad to enter -65, then press the dB soft key.

29. Press the Next Point Right soft key.

30. Verify that the Frequency is set to 6 GHz.

31. Press the Amplitude soft key, use the keypad to enter -65, then press the dB soft key.

Figure 2. Test Setup

RFOUT/REFLECTION

TEST PORT

EXTENSION CABLE

RF IN PORT

VNA Master MS202xA MM 5

32. Verify that the noise floor is below the limit line.

4.3 Return Loss Verification

The following test can be used to verify the accuracy of return loss measurements. Measurement calibration of the VNA

Master is required for this test.

Equipment Required:

• 20 dB offset, Anritsu SC7423

• 6 dB offset, Anritsu SC7424

• Open/Short, Anritsu 22N50

• 50 Ohm Termination, Anritsu 28N50-2

• VNA Master External Power Supply, Anritsu Part Number 40-168

Procedure:

1. Connect the external power supply (Anritsu part number 40-168) to the VNA Master.

2. Press the On/Off key to turn on the VNA Master.

3. Press the Shift key, the Preset key (1), and then the Preset soft key to reset the instrument to the default start-

ing conditions.

4. Press the Measurement key, then press the S11 Reflection soft key. Verify that the Log Magnitude soft key

is selected (there will be a red dot on the key label). If not, select the Log Magnitude soft key.

5. Press the Shift key, then press the Calibrate (2) key. Verify that the Type is set to 1-Port and Cal Power is

High.

6. Press the Start Cal soft key. Follow the instructions on the screen to perform a calibration using a 22N50 Open/

Short and 28N50-2 Termination.

7. Press the Scale key, then press Reference Value soft key. Use the keypad to enter 20, then press the dB soft

key.

8. Press the Resolution Per Div soft key. Use the keypad to enter .4, then press the dB soft key.

9. Connect the 20 dB offset to the RF Out test port.

10. Press the Marker key and select the Peak Search soft key and record the Marker value.

11. Press the Valley Search soft key and record the Marker value.

12. Verify that both the Peak and Valley readings are within 20 ±1.61 dB.

13. Disconnect the 20 dB offset.

14. Press the Scale key, then press the Reference Value soft key. Use the keypad to enter 6, then press the dB soft

key.

15. Press the Resolution Per Div soft key. Use the keypad to enter 0.2, then press the dB soft key.

16. Connect the 6 dB offset to the RF Out test port.

17. Press the Marker key and select the Peak Search soft key and record the Marker value.

18. Press the Valley Search soft key and record the Marker value.

19. Verify that both the Peak and Valley readings are within 6 ±0.95 dB.

Table 2 2-Port Isolation Specification

Frequency Range Dynamic Range (dB)

2 MHz to 3 GHz 80

3 GHz to 5.5 GHz 70

5.5 GHz to 6 GHz 65

NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.

6 VNA Master MS202xA MM

4.4 Power Monitor (Option 5) Verification

If the Power Monitor (Option 5) is installed in the VNA Master, the following test can be used to verify the accuracy of

the power measurements.

Equipment Required:

• Anritsu MG3691A Synthesized Signal Source with options 2A, 4 (or 5), and 15A

• Power Meter, Anritsu Model ML2437A

• Power Sensor, Anritsu Model MA2442D

• RF Detector, Anritsu 560-7N50B

• Power Splitter, Weinschel Model 1870A

• RF Coaxial Cable, Anritsu Model 15NN50-1.5C

• Adapter, Anritsu Model 34RKNF50

• VNA Master External Power Supply, Anritsu Part Number 40-168

Procedure

1. Connect the external power supply (Anritsu part number 40-168) to the VNA Master.

2. Press the On/Off key to turn on the VNA Master.

3. Press the Shift key, the Preset key (1), and then the Preset soft key to reset the instrument to the default start-

ing conditions.

4. Set the MG3691A output to 1.0 GHz.

5. Connect the power sensor to the power meter and calibrate the sensor.

6. Connect MG3691A, power meter, RF detector, and sensor as shown in Figure 3.

NOTE: Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.

Figure 3. Power Monitor Verification Test Setup

ML2437AMS2024A POWER METER

MG3691A SOURCE

5NN50-1.5C

34RKNF50

ADAPTER

1870A

DETECTOR SENSOR

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