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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 

2

 then 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 

2

 and 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.

Summary of Contents for MS2024A

Page 1: ...MS2024A MS2026A VNA Master MAINTENANCE MANUAL P N 10580 00124 REVISION A PRINTED APRIL 2006 COPYRIGHT 2006 ANRITSU CO 490 JARVIS DRIVE MORGAN HILL CA 95037 2809 ...

Page 2: ......

Page 3: ...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 Replace...

Page 4: ......

Page 5: ...ent 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 Weins...

Page 6: ...ined 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 2 then 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 2 and press the GHz soft key to set the Stop Frequency ...

Page 7: ...alue 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 sc...

Page 8: ...ey then press the Frequency soft key 21 Use the keypad to enter 3 and 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 th...

Page 9: ... 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 an...

Page 10: ...nal 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 ca...

Page 11: ...8 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 Shift key and then the Sweep 3 key Low Current Test 1 Press the Bias Tee soft key and verify that the 12V soft key is selected and the Current soft key is set to Low 2 Press the Bias Tee On O...

Page 12: ...n 31 Operational Check The following test can be used to verify the operation of the GPS option Equipment Required VNA Master External Power Supply Anritsu Part Number 40 168 Anritsu 2000 1410 Magnet Mount GPS Antenna or equivalent 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 Pr...

Page 13: ... If left unused a fully charged battery will discharge itself over time Temperature extremes affect the ability of the battery to charge allow the battery to cool down or warm up as necessary before use or charging Discharge the 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 b...

Page 14: ...ger in the battery access door notch and push the door down towards the bottom of the instrument as illustrated in Figure 5 3 Remove the battery access door as illustrated in Figure 6 NOTE Many of the procedures in this section are generic and apply to many similar instruments Photos and illustrations used are representative and may show instruments other than the VNA Master Figure 4 Battery Acces...

Page 15: ... battery straight out of the unit as illustrated in Figure 7 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 bottom of the unit as illustrated in Figure 8 Figure 7 Removing the Battery Figure 8 Battery Contacts ...

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