ITC 220 Base Station, Locomotive & Wayside Radio Transceiver Field Service Guide PN 0046300120 Rev. A
| Page 88
Step
Action
Button / Selection
28
Select “Symbol Rate.”
Symbol Rate
29
Using the numeric keypad, enter 16 ksps for full-rate testing or 8 ksps for half-rate
testing.
16ksps / 8ksps
30
Return to an upper level by pressing “Mode Setup” to define additional parameters. Mode Setup
31
Load the user-defined data file just created.
Data
32
Pick “User File.”
User File
33
Use cursor keys to select “DQPSK” and press “Select File.”
Select File
34
Set “Custom” to “On.”
Custom
35
Save the file.
Save
36
Select a register that is not in use.
“Select Reg,” and then
“1” (or suitable unused
register), and then “Save
Reg”
37
Press “Preset” and now load the waveform.
Preset
38
Recall the waveform with “Recall.”
Recall
39
Select the register using the numeric keypad and press “Enter.”
1 Enter
40
Set the frequency and power level, and be sure RF and Modulation are ON.
Frequency: 220 MHz
Amplitude: –80 dBm
Mod: ON
RF: ON