HP 8112A Operating, Programming And Servicing Manual page 257
50 mhz programmable pulse generator
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- Operating, programming and servicing manual (112 pages) ,
- Operating, programming and servicing manual (406 pages)
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Timing Ranges
Period range 1 PER 20 ns-99.9 ns
all other ranges PER 100 ns-950 ms
Double range 1 DBL 20 ns-99.9 ns
all other ranges DBL 100 ns-950 ms
Width range 1 WID 20 ns-99.9 ns
all other ranges WID 100 ns-950 ms
Slope range 1
Slope range 2
Slope range 3
Slope range 4
Slope range 5
Slope range 6
Slope range 7
Period Control
Delay Control
Measure levels at U2 Timing Range Decoder IC against readings in
Table 10 .5-2
Table 1 0.5-2. Timing range decoder
Timing Range Decoder U2
LEE=TRE 5.5 ns-99.9 ns
LEE=TRE 50 ns-999 ns
LEE=TRE 0.5 µs-9.99 µs
LEE=TRE 5 µs-99.9 µs
LEE=TRE 50 µs-999 µs
LEE=TRE 0.5 ms-9.99 ms
LEE=TRE 5 ms-99.9 ms
Area
l . Set the HP 8 1 1 2A to RCL
2. Check the Period DAC output according to the following table:
Table 1 0.5-3. Typical Period Control DAC Output
l . Set the HP 8 1 1 2A to RCL 0, PER 15 ms
2. Check the Delay DAC output according to the following table:
Table 1 0.5-4. Typical Delay Control DAC Output
Pin 2 Pin 5 Pin 6
PRO
L
H
U3/3 U28/4 U3/4
O
HP 8112A PER Voltage at TPl
1 ms
+9.8 v
5 ms
+l.95 v
9.99 ms
+0.98 v
HP 8112A DEL Voltage at TP3
1 ms
+9.8 v
5 ms
+l .95 v
9.99 ms
+0.98 v
Servicing the Control Board 1 0.5-13
Pin 12 Pin15
DRO WRO
SCPO
L
H
L
H
L
H
H
H
H
L
H
U l l/10 U l l/9
SC Pl
L
L
L
L
L
H
H
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