LOOP-BACK TEST
31
Performing a Loop-Back Test
KPC-4 Only
This test is to verify that your KPC-4 is functional and that the wiring to your computer is correct.
1. Remove the KPC-4 from its case. (See the Assembly and Disassembly section.)
2. Install jumpers between the radio ports as shown.
Female DB-9 Connectors (Looking at Holes)
3. Remove the header connectors from AFSK level jumpers K3 and K4.
4. Set a different callsign for Port 2. For example:
MYCALL WK5M/DC7XJ
5. At the cmd: prompt enter a connect request to the callsign you have set for Port 2. Your dis-
play should look like this:
cmd: C DC7XJ (<CR>)
When you enter the carriage return the following will appear on your display:
cmd:~A*** CONNECTED TO WK5M
|A*** CONNECTED TO DC7XJ
You are now in Converse Mode, connected to your Port 2. Type HELLO <CR> and the following
will be added to your display:
|AHELLO (this was received by Port 2)
6. You can manipulate transmission/reception between radio Port 1 and radio Port 2 by using the
proper STREAMSW command, the ~ or |, or whatever streamswitch characters you have
chosen.
7. These steps have shown that your KPC-4 is functional and that wiring to your computer is
correct.
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