ITC 220 Base Station, Locomotive & Wayside Radio Transceiver Field Service Guide PN 0046300120 Rev. A
| Page 31
To test the transceiver front-panel LEDs:
1.
If it is not already connected, connect the computer to the transceiver
MAINT
port, using a Category 5 or better
Ethernet cable.
2.
On the computer, open the
XtermW
application, if it is not already open.
3.
Click
Send
, click
Command
, and then type:
IOD,0xFE0
4.
Click
OK
.
5.
Verify that all LEDs illuminate, except the power LED (PWR) which will blink (as it does in normal operation when
power is applied to the transceiver).
6.
Click
Send
, click
Command
, and then type:
IOD,0x000
7.
Click
OK
.
8.
Verify that all LEDs turn off, except the power LED which will continue to blink as in normal operation.
To test LEDs individually, use values from the following table with the
IOD
command to illuminate the associated LED.
Table 7 Front Panel LEDs and IOD values arranged by IOD value
LED Label
IOD Value
LED Label
IOD Value
TX (Transmit link)
0x0020
STBY (Standby)
0x0400
SWR (VSWR)
0x0040
FLT (Fault)
0x0800
RX (Receive link)
0x0080
DTL (DTE Link)
0x0100
All On (except Power)*
0xFE0
RFL (RF Link)
0x0200
All Off (except Power)*
0x000
*The PWR LED blinks; it does not illuminate solid on.
NOTE
— Be sure to
Send
the
Command
IOD,0x000
(then click
OK
) to the transceiver when you have finished testing
the LEDs, to turn off all LEDs (except Power, which will blink), or alternatively restart the transceiver (using the
BOOT
command, for example) to return all LEDs to normal operation.
Table 8 Front Panel LED IOD values arranged to panel LED arrangement
IOD Value
LED Label
LED Panel
LED Label
IOD Value
(none)
Power
Tx Transmit 0x0020
0x200
RF Link
Rx Receive
0x0080
0x100
DTE Link
Fault
0x0800
0x400
Standby
VSWR
0x0040
0xFE0
All On (except Power)*
0x000
All Off (except Power)*
*The PWR LED blinks; it does not illuminate solid on.