DATA PRECISION 5740 - Input Sensitivity and Trigger Level Check

72-1002
Model 5740 COUNTER
GENERATOR
4
MODEL 5740
OdBm
ATTEN = x1
TRIGGER = Center
Check at TP5
for
Time Base
Interval
50-OHM LOAD (IF NEEDED)
SIG GEN
FREQ (HZ)
MODEL 5740
GATE TIME
DISPLAY *
1,111,111
.01 sec
001111.1 +1
2,222,222
.1 sec
02222.22 +1
4,444,444
1 sec
4444.444 +1
555,555
10 sec
555.5550 +1
•Also checks performance of Counter Chain for different digits.
Fig. 4-7. Programmablt Divider Test Sequence
START
OK
USE
OK
OK
SIGNAL \
TRACE'
INTERCYCLE,
COUNTER A
CHECK
TP2
CHECK
TP 4
WAVEFORM
CHECK
TPl
Figure 4-8. Intercycle Control Test Sequence
4.11 INPUT, SENSITIVITY, ATTEN, AND
TRIGGER LEVEL CHECK (FIG. 4-6)
4.11.1 Setup
Model 5740
MODE Switch (S4): SEC/FREQ
Rotary Switch (S3): lOOmsec GATE TIME
Signal Generator
Frequency: lOOOOOHz
Output Level: (per procedure)
4.11.2 Procadure
Vary Model 5740 ATTEN and TRIGGER Level
Controls and Signal Generator output level
as shown in Figure 4-9. Verify display
values against Figure 4-9 table. Signal-
trace input circuit if in error.
COPYRIGHT 1976 DATA PRECISION CORPORATION. PRINTED IN THE UA>.
4-7