HP 11757B Installation And Calibration Manual page 21

Multipath fading simulator
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HP 11757B
Printer
Caution
threshold if desired. Press
have the correct input threshold for your radio. Error
pulse input variable threshold is only available in serial
pre xes 3235A and above.
Alarm Input
The alarm input (TTL 10k ) may be set for polarity.
The default setting is positive. To change the polarity
press
, and then press
4
5
RADIO SETUP
is displayed. Press
POL
toggle between postive and negative. Press
you have the polarity you want.
The Fader's internal printer uses thermal paper, HP part
number 9270-1299. To load a new roll of paper into the
Fader:
Never pull the paper from the Fader. Use the
key. Failure to do so could cause permanent
4
5
PAPER FEED
damage to the print head.
1. The Fader must be plugged in and the power switch
set to on.
2. Turn the knob on the paper holder counter-clockwise
several times until the paper holder can be pulled
out of the Fader.
3. Slide the paper cover o the paper holder.
4. Using a posidrive or a phillips screwdriver remove
the screw from the top of the paper roll (screw
counter-clockwise). Remove the plasic washer and
the old roll of paper.
5. Place a new roll of paper on the paper post so that
paper will roll o the post in a clockwise direction.
6. Place the plastic washer on top of the roll and
replace the screw (screw counter-clockwise).
Installation and Calibration
again when you
4
5
ENTER
until
485
2 ALARM
, and then use
4
5
485
ENTER
4
ENTER
to
when
5
13

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