Anritsu S412E - Positive Train Control (PTC) Verification, Option 721 and 722

Chapter 5 — Option Verification 5-11 Positive Train Control (PTC) Verification, Option 721 and 722
S412E MM PN: 10580-00324 Rev. N 5-25
5-11 Positive Train Control (PTC) Verification, Option 721 and 722
The following verification procedure is split into two procedures depending on the S412E’s firmware version.
One procedure is for units with firmware version 1.09 and below and the other is for units with firmware
version 1.10 and above. Only one of the two procedures needs to be performed. Please note if upgrading a unit
from firmware version 1.09 or lower, to version 1.10 or higher, the S412E will need to be sent to the local
Service Center to have additional Signal Generator patterns installed.
Equipment Required
• RF coaxial cable, Anritsu Model 15NN50-1.5C
• AC Power Adapter, Anritsu part number 40-187-R
Procedure for Units with Firmware Version v1.09 and Lower
1. Connect the 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.
2. Power on the S412E and put the instrument into PTC Analyzer mode with the Menu button.
3. Preset the S412E by pressing the Shift key, then the Preset (1) key, then the Preset button on the
touchscreen.
4. Connect the RF cable between the Signal Generator Out and RF In connectors of the LMR Master.
5. Press the Setup main menu button and set Tx Pattern to ptc_4fsk_pattern0_6000.
6. Press the Amplitude main menu button and set Tx Output Lvl to 0dBm.
7. Press the Frequency main menu button and set Rx/Tx Coupling to On.
8. In the lower-right hand corner of the touchscreen press the Turn Sig-Gen ON button to turn the signal
generator on. The button will now appear as Turn Sig-Gen OFF to allow the signal generator to be
turned off when the procedure is completed.
9. Press the Frequency main menu button and set Rx Frequency to 5.5 MHz.
10. Record the Mod Fid value in Table A-34, “Units with Firmware Version 1.09 and Lower, Options 721
and 722, PTC Verification” on page A-22, and verify the value is within specification.
11. Repeat Step 9 through Step 10 for the other Frequencies listed in
Table A-34.
12. Press the Setup main menu button and set Symbol rate from 6000 to 18000.
13. Repeat Step 9 through Step 10 for all Frequencies listed in Table A-34.
14. When finished press the Turn Sig-Gen OFF button to turn off the signal generator.
Note Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.