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Instrument Relay 9-16 (W)
Base + 23
Agilent E8782A 24-Instrument, 40-Measurement Matrix Card
Bits
7
Read
Busy~
Write
X
E6198B Switch/Load Unit User Manual
(35
):
h
10
Bits
Write
Inst
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
Returns Instrument matrix card type:
Instrument matrix card without auxiliary returns a card type of
6610 :(ddddddd=1000010)
Instrument matrix card with auxiliary returns a card type of
6710 :(ddddddd=1000011)
Bits
Read
Card Configuration (R) Base + 1
Instrument matrix card configuration and firmware revision
(FWR) register. Initial firmware revision = 0h
Bits
FWR3
Read
Status and Control (R/W) Base + 2
This register reads back the card's status. It can set the state of
DAC1Rly, DAC2Rly and GndRly relays. I can also be used to
Reset and Open All Relays (OAR).
6
5
0
OAR
X
OAE
Read Only:
7
6
5
Inst
Inst
Inst
16
15
14
h
7
6
5
0
d
d
7
6
5
FWR2
FWR1
4
3
0
DA2Rly
X
DAC2Rly
Register Definitions
4
3
2
Inst
Inst
Inst
13
12
1
4
3
2
d
d
d
h
4
3
2
0
0
0
h
2
1
DAC1Rly
GndRly
DAC1Rly
GndRly
B
1
0
Inst
10
9
1
0
d
d
1
0
0
0
0
Reset
Reset
B-65
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