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AM5(e) Classic Instruction Manual
4.
SELF TEST AND CALIBRATION
This section describes procedures to verify that the AM5(e) Classic is working properly.
It also identifies the "factory default" settings and provides a calibration procedure.
4.1
SELF TEST CONFIGURATION
Self tests are performed with the AM5(e) Classic looped back on itself and not
connected to any external equipment.
Signals sent through the transmit (TX/2W) jack are routed directly back to the Receive
(RX) jack through a Bantam Cable (48-0047) plugged into these jacks. If this cable is not
available, a pair of wires may be connected to the rear panel screw terminals (T to T1
and R to R1).
4.2
POWER ON SELF-TEST
To begin a self-test, press the POWER switch in (it will lock). All LEDs will light, all
segments and decimal points will light in the display ("all 8s"), then the words TEST
PASS will be displayed on the display windows on the front panel. These displays will
last for about three (3) seconds. The AM5(e) will then assume its default configuration.
NOTE: If the message "Full Cal ?" appears, it indicates that the user should
perform a calibration check for absolute assurance that the unit will measure
within specifications. This indication should not appear during power turn-on
except at the factory.
4.3
DEFAULT SETTINGS
4.3.1 Function LEDs at Power Turn-on: The following LEDs will be lighted after the
"all 8s"and TEST PASS message has been displayed. These are the "factory
default" settings which place the AM5(e) Classic in its basic mode of operation.
Refer to Figure 3-1 or 3-2 for the locations of the indicators. The following is a list
of LEDs that will be lighted (starting with DISPLAY MEAS and moving counter-
clockwise on the front panel):
Function
DISPLAY
MEASURE
SEND
TX/2W
RX
LINE
DIAL
November 19, 1997
(18-0047)
LED
MEAS
LEVEL
FREQ
QUIET, SF SKIP, and F1 (flashing)
600Ω
600Ω and
TERM
4W
MEAS
Page 4-1
SELF TEST and CALIBRATION
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