5-23. Sequential Point Plotting Time; Deflection Factor Test Setup - HP 1317A Operating And Service Manual

Model13l7A
VOLTMETER CALIBRATOR
. . - * -
I
1\
@ @
DOUBLE BANANA TO
BNC ADAPTOR
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50[2
COAX
X
INPUT
(IN REAR)
Model 1317A
MEASURE
LENGTH
~
Performance Check
1317 A-L-008
Figure 5-4. Deflection Factor Test Setup
k. Set pulse generator delay to 10 ns and vernier
cwo Note clean bright dot on lower left of CRT.
1. Turn delay vernier ccw. Note appearance of
distorted trace segment projecting from dot.
m. Adjust delay vernier until length of trace
segment is one dot diameter.
n. Measure time difference between two tran-
sitions displayed on monitor oscilloscope. Difference
shall be equal to or less than 500 ns.
5-23. SEQUENTIAL POINT PLOTTING TIME.
5-24. Required Result. The spot shall settle to
within 0.010 inch of final value in less than 200
nanoseconds for any 0.10 inch step.
5-25. Procedure.
a. Perform preoperational procedure (Section
III).
b. Set
500/lOK
switches (on boards AI, A3, and
A5) to 500.
c. Connect equipment as shown in figure 5-5.
Note that line to Z INPUT is not yet connected.
d. Set square wave generator for 100-kHz sym-
metrical output.
e. Set amplitude of square wave generator to
cause 0.1 inch deflection on CRT.
f. Set BRIGHTNESS ccw.
g. Connect
Z
INPUT.
h. Set pulse generator for 100-kHz, IV p-p,
llJ.sec width pulse output.
i. Set sweep time of monitor oscilloscope to
O.llJ.sec/div and display switch to ALT B.
j. Set monitor oscilloscope trigger controls to
achieve stable display. If necessary, slightly read-
just symmetry control on square wave generator to
achieve synchronization between channels A and B.
k. Set pulse generator delay to 10 ns and ver-
nier cwo Note single clean bright dot.
5-5