HP 8112A Operating, Programming And Servicing Manual page 249

T I M I NG COMP/H I GH
BYTE BURST
LD1H.01
+5V
FROM A3/W4
M I CROP . BD
3
+5V
DAC
REFERENCE
1
cl4
1. 1u
Rl7
lK
T I MER
4
SERV I CE
- lYREF'