HP 3562A Service Manual page 390

MO D E L 3562A
C . AS, A6 D igital Fi lter Check
1 . Press the l i ne switc h off.
2. P u l l the fol lowi ng assem bl ies up in their card nests:
A32 ADC 1
A33 I N PUT 1
A34 ADC 2
A35 I N PUT
3 . Press the l i ne switch on.
4. Press the H P 3562A keys as fol lows:
SPCL
. . . . . . S E RV I C
FCTN
5. If th is test fails, start troubleshooting with the A5 D igital Fi lter and A6 Dig ital Fi lter
Contro l ler (go to 8-9).
6. If this test passes, the AS D ig ital Fi lter and A6 D igital Fi lter Contro l ler assem b l ies
are probably operati ng correctly. Repl ace a l l assem b l ies i n the i r card nests.
7. Press the H P 3562A keys as fo l lows:
SPCL
. . . . . . S E RV I C
FCTN
8 . I f the ADC G ate Array test passes, the data path from the A DC to the d igital fi lter
is probably fu ncti o n i ng correctly.
9. If only one channel is fai l i ng and the DFA F u n ctional test ( D FA FU NCTN) passed
for both c hannels, go to part F .
T E ST . . . . . . T E ST
PROC
. . . . . . T E ST
D FA
T E ST . . . . . . T E ST
I N PUT
. . . . . . D FA
FU NCTN
. . . . . . ADC . . . . . . D I GTAL
FAU LT I SO LAT I O N
7-27