4-5 Option 31, GPS Verification Option Verification
4-8 PN: 10580-00253 Rev. J S3xxE MM
7. Connect the external 10 MHz Reference to the Anritsu MG3692x Synthesized Signal Generator.
8. Connect the output of the synthesized Signal Generator to the Spectrum Analyzer RF In of the S332E or
S362E.
9. Set the MG3692x output to 4GHz CW, with an RF output level of –30 dBm.
10. On the S332E or S362E, press the Amplitude key, and set the reference level to –10 dBm.
11. Press the Freq soft key and set the center frequency to 4.0 GHz.
12. Press the Span soft key and set the span to 10 kHz.
13. Press the BW soft key and set RBW to 100 Hz.
14. Press the VBW soft key and set to 30 Hz.
15. Press the Marker key, and press the Peak Search soft key.
16. Note the Reference Source value and use the appropriate row to record the data in the following steps.
17. Record the marker frequency in the Measured Value column of Table A-20, “Option 31, GPS Receiver
Frequency Accuracy Verification”.
18. Subtract the marker value from 4 GHz and record the result in the Error column of Table A-20. Verify
that it is within specification.
19. If the value of Reference Source indicates GPS High Accuracy, then remove the GPS antenna and wait
until the Reference Source indicates “Int Hi Accy” and repeat Step 16 through Step 18.
GPS Antenna Bias Tee Verification
The tests in this section verify the GPS Antenna Bias Tee Voltages of Option 31 on the S3xxE Site Master.
Equipment Required
• Adapter SMA to BNC(f), Pomona 4290 or equivalent
• Adapter GPS Terminator, Amphenol B1004A1-ND3G-93R-0.05-1W or equivalent
Procedure
1. Connect the external power supply to the S3xxE Site Master.
2. Press the On/Off key to turn on the S3xxE.
3. Set the S3xxE to Spectrum Analyzer mode and preset the unit.
4. Press the Shift key, and then the System (3) key.
3.3 V Test
5. Connect the 4290 Adapter to the GPS Antenna SMA connector.
6. Connect the GPS Terminator to the 4290 Adapter.
7. Confirm the 3.3 V setting on the GPS Voltage soft key is selected (underlined)
8. Turn GPS On by toggling the GPS soft key so the On text is underlined.
9. Press the GPS Info soft key. Record the GPS Antenna Current reading in the Measured Value column of
Table A-21, “Option 31, GPS Receiver Bias Tee Verification”. Verify that it is within specification.
5 V Test
10. Press the Escape key to dismiss the GPS Info dialog.
11. Press the GPS Voltage soft key and select 5V.
Note Do not connect the external 10 MHz Reference to the S3xxE Site Master.
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