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AM5(e) Classic Instruction Manual
4.5
LOOPBACK TESTS
This sub-section contains some basic procedures for verifying the operation of the
AM5(e) Classic. In these procedures, those steps identified as "(df)" do not have to be
performed if the factory defaults are in effect, as indicated by the LED display
described in the step. If a different display is shown on the panel, or you want to verify
the operation of the key, then perform the step. Press keys momentarily for less than
1 second, until LED indication occurs, unless otherwise directed.
4.5.1 Set up
1.
If not already on, turn on the AM5(e) by pressing the power switch to the
ON (locked-in) position. Observe all lighted LEDs, "8.8.8.8. 8.8.8.8" then
"TEST PASS" display, then default configuration (see 4.5.2).
2.
Verify that there is a bantam cord connected between the TX/2W jack and
the RX jack, or (alternatively) there is a T <—> T1 and R <—> R1 connection
at the rear-panel terminals.
4.5.2 QUIET Test: This test checks the AM5(e) Classic default settings, and verifies
QUIET mode displays.
1.
(df) Press DISPLAY key until MEAS is lighted.
2.
(df) Press MEASURE key until LEVEL FREQ is lighted.
3.
Press MEASURE key till NOISE is lighted. Verify that FILTER CMSG
(PSHO on AM5e) is lighted, then continue to press MEASURE until
LEVEL FREQ is lighted again.
(df) Press right FILTER key until 60 Hz is not lighted.
4.
(df) Press left SEND key until QUIET is lighted.
Press middle SEND key until SF SKIP is not lighted.
(df) Press right SEND key until F1 404Hz (F1 304 on AM5e) is flashing.
5.
(df) Press left TX/2W key until 600Ω is lighted.
(df) Press right TX/2W key until OFF HOOK is not lighted.
6.
(df) Press left RX key until 600Ω is lighted.
(df) Press middle RX key until OFF HOOK is not lighted.
(df) Press right RX key until TERM is lighted.
7.
(df) Press LINE key until 4W is lighted.
8.
(df) Press DIAL key until MEAS is lighted.
November 19, 1997
(18-0047)
SELF TEST and CALIBRATION
Page 4-4
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