HP 8112A Operating, Programming And Servicing Manual page 268
50 mhz programmable pulse generator
Hide thumbs
Also See for 8112A:
- Operating, programming and servicing manual (112 pages) ,
- Operating, programming and servicing manual (406 pages)
Table of Contents
Advertisement
Burst Counter
1 0.6-6 Servicing the Burst Control Circuit
Test the burst counter circuits using the following procedure:
1 . Set up the HP 8 1 12A up as follows:
PER
Mode
DTY
BUR
2. Switch off the HP 8 1 12A
3. Desolder wire W3 on the control board A2 and resolder it to the
"test" position. This pulls BURST ON low via R105.
4. Connect Al U201 pin 10 to ground.
5. Switch on the HP 8 1 12A and check that error number E52 is
displayed.
6. Press (LCL )
7. Press the (MAN) button
8. Check the TTL logic levels at the burst acceptors UlOO and UlOl
as follows:
9. Using an oscilloscope and ECL- and TTL-logic probes you
can test the burst- counter waveform and timing data against
Figure 10.6-3.
1 µs
E.BURST
50 3
1024
Table 1 0.6·2.
Pin
Level
Signal
BNl
UlOO Pin 2
BN2
U lOO Pin 5
BN3
UlOO Pin 6
BN4
U lOO Pin 9
BN5
UlOO Pin 12
BN6
UlOO Pin 15
BN7
UlOO Pin 16
BN8
U lOO Pin 19
BN9
UlOl Pin 2
BNlO UlOl Pin 5
B N l l UlOl Pin 6
L
L
L
L
L
L
L
L
L
L
- Quick Links:
- General
Hide quick links:
Advertisement
Chapters
Table of Contents
