B-74 E6198B Switch/Load Unit User Manual
B Register Definitions
Row Relay 17-24 (W)
Base + 2B
h
(43
10
)
Row Relay 25-32 (W)
Base + 2C
h
(44
10
)
Row Relay 33-40 (W)
Base + 2D
h
(45
10
)
Agilent E8783A 64-Pin Matrix Card
For relays, writing a 1 closes the relay, writing a 0 opens the
relay. Register read back for the relay states is not provided.
Thus, state tracking must be done in software.
Card Type (R) Base + 0
h
Returns measurement matrix card type:
Measurement matrix card without auxiliary returns a card type
of 7010 : (ddddddd=1000110)
Measurement matrix card with auxiliary returns a card type of
7110 : (ddddddd=1000111)
Bits76543210
Write
Row
24
Row
23
Row
22
Row
21
Row
20
Row
19
Row
18
Row
17
Bits76543210
Write
Row
32
Row
31
Row
30
Row
29
Row
28
Row
27
Row
26
Row
25
Bits76543210
Write
Row
40
Row
39
Row
38
Row
37
Row
36
Row
35
Row
34
Row
33
Bits76543210
Read
dddddddd