HP 37718A Installation And Verification Manual page 73

N OT E
Performance Tests
Self Test
2 Insert a formatted disk into the instrument disk drive.
3 Make the loopback connections listed below:
Connect Transmit module 75
Connect Transmit module 100/120
Ω
120 IN
Connect Transmit module 75
Connect Transmit module 100/120
Ω
120 DEMUX
Connect Multirate Analyser IN to OUT
Connect the 15 dB optical attenuator provided to Optical OUT and
connect the attenuator output to Optical IN.
4 Press
RUN/STOP
will be displayed.
The information pertaining to TEST TYPE, TEST NUMBER and
SUBTEST NUMBER will change as the Self Test progresses.
If the HP 37718A/19A is functioning correctly, after a time of 2 to
3minutes, TEST STATUS PASSED is displayed.
If TEST STATUS [FAIL nnn] is displayed, the HP 37718A/19A should
be returned to a service office for repair.
Each individual self test requires unique loopback connections. To obtain
a list of the connections required move the highlighted cursor to
CABLING INFO and press
display.
Ω
OUT to Receive module 75
Ω
OUT to Receive module 100/
Ω
MUX to Receive module 75
Ω
MUX to Receive module 100/
to activate the Self Test. TEST STATUS RUNNING
.
The Loopbacks list will appear on the
SET
Ω
IN
Ω
DEMUX
3-5