Texas Instruments 990 - Alarm Signal Timing Diagram

C30HZQ (U 58-11 ,LOGIC SHEET 6)
(EACH INTERVAL IS • 025 @ 50 HZ OR
• 033 SECONDS AT 60 HZ)
ALAQ (U68-6 •LOGIC SHEET 6)
ALAQ * (U68-8 ,LOGIC SHEET 6)
NRSAL (U69-1 ,LOGIC SHEET 17)
NRSAL * (U69-1 3 •LOGIC SHEET 18)
NAQ (U79-7 ,LOGIC SHEET 17)
NAQ * (U37-7 ,LOGIC SHEET 18)
NCR 14P (U99-7 ,LOGIC SHEET 17)
NCR14P * (U 28-9, LOGIC SHE ET 1 8)
(A) 1 36322
0
2
3
4
5
6
7
ALARM COUNTER=8
ALARM LATCH RESET
ALARM LATCH
BEEP ENABLE STROBE
DETAIL B
DETAIL A
C30HZQ
NCR 14(P)
NAQ(*)
ALAQ(*)
NRSAL(*)
DETAIL A
NAO(*)
DETAIL B
Figure 2-8. Alarm Signal Timing Diagram