Gps Verification, Option 31 - Anritsu S412E Maintenance Manual

Chapter 5 — Option Verification
5-3

GPS Verification, Option 31

The following test is used to verify the operation of the GPS Option on the S412E.
Ensure that the Anritsu GPS Antenna is in a direct line-of-sight relationship to the GPS satellites or
Note
that the Antenna is placed outside without any obstructions.
• "Touch the GPS submenu button." on page 5-3
• "Spectrum Analyzer Frequency Accuracy with GPS On" on page 5-4
GPS Antenna Bias Tee Operational Check
Equipment Required
• SMA(m) to BNC(f) Adapter, Pomona part number 4290
• BNC(m) 93 Ohm Terminator, Amphenol part number B1004A1-ND3G-93R-0.05-1W
• GPS Antenna, Anritsu part number 2000-1528-R
• AC Power Adapter, Anritsu part number 40-187-R
Procedure
1. Connect the SMA(m) to BNC(f) Adapter to the GPS connector of the S412E.
2. Connect the BNC(m) 93 Ohm terminator to the BNC(f) end of the adapter.
3. Connect the external AC Power Adapter (Anritsu part number 40-187-R) to the S412E and then plug the
power cord of the AC Power Adapter to an AC outlet.
Note The S412E must be powered by external AC power for this test.
4. Press the On/Off key to turn on the S412E.
5. Press the Shift key and then the Preset (1) key. Touch the Preset button on the touchscreen submenu to
set the instrument to the factory preset state.
Note Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize
6. Press the Shift key and then the System (8) key.
7. Touch the GPS submenu button.
8. Confirm that the 3.3 V setting on the GPS Voltage submenu button is selected (underlined).
9. Touch the GPS On/Off submenu button to turn the GPS feature On.
10. Touch the GPS Info submenu button and wait until the GPS INFO dialog box appears.
11. Verify that the GPS Antenna Current is within the expected current range for 3.3 V Bias per
Table 5-2. Option 31 GPS Antenna Bias Tee Operational Check
Voltage Setting
12. Press the Esc key to dismiss the GPS INFO dialog box.
13. Touch the GPS Voltage submenu button to select 5 V.
14. Touch the GPS Info submenu button and wait until the GPS INFO dialog box appears.
15. Verify that the GPS Antenna Current is within the expected current range for 5 V Bias per
S412E MM
3.3 V
5 V
PN: 10580-00324 Rev. N
5-3 GPS Verification, Option 31
Expected Current Range
27 mA to 38 mA
42 mA to 64 mA
Table 5-2.
Table 5-2.
5-3