HP 83522A Service Notes page 250

Service
Model 83522A
-
w
I
-460 psec
. .
I
1
-
28 psec
LEN
0
I
-40 psec
j
(Not Used)
I
I
I
LEN 1
I
I
(Not Used)
I
I I
L E N 2
1
I
I
(Not Used)
1
I I
L E N 3
1 I
(Not Used)
I
I I
I
LEN 5
I
I
I
U18-10
I
I
I
LEN 6
(Not Used)
Enter: SH l FT 54
Trigger: LEN
fl
Figure 8-3 7. A5 Address Decoder Timing Waveforms
Relays K1 and K2. A known FM input is applied and the waveform at TP4 is
monitored. The Hex Data Write feature of the 8350A is used to control relays K1
and K2. Connect equipment as shown in Figure 8-41. Adjust the function
generator for a 500 Hz 1 V peak-to-peak sine wave output with a i-0.5 Vdc offset
(use function generator offset control).
To check relay K1, enter on the 8350A:
SHIFT 0 0
Enters Hex Data command
2 GHzs
0 4 Address location 2C04 (U16)
M2
.
8
Hex Data Write A8
Relay Kl should be open. Verify that there is a signal centered around 0 Vdc at
On the 83504 enter:
M2
8 8 Hex Data Write 88
Relay K1 should now be closed. Verify that the signal at TP4 is offset from being
centered around 0
-
Vdc.
To check relay K2, enter on the 8350A:
M2 BKSP 8
Hex Data Write F8
Relay K2 should be closed. Note the level of the signals at TP3 and TP4.