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Pin Matrix Card Register Definition
Agilent E8792A and E8793A Pin Card Register Definitions
E6198B Switch/Load Unit User Manual
Registers for the various load cards are defined in the following
tables. Each register is designated a W (Write-only) or R
(Read-only). The h subscript indicates a hexadecimal number.
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 the pin card type:
• Agilent E8792A returns a card type of 10
• Agilent E8793A returns card type of 11
Card Configuration (R) Base + 1
Pin card configuration register and firmware revision (FWR)
register. Initial firmware revision = 0
Bits
Read
Status and Control (Read/Write) Base + 2
Status and Control Register provides applicable features from
the Agilent E6172 VXI card; register offset 4
Bits
7
6
Read
Busy~
Manual
Write
x
Manual
Read Only:
•
Busy~: 0 indicates busy, 1 indicates not busy.
Write and Read Bits:
•
Manual: 0 to set column relay control to automatic, 1 to
set column relay control to manual.
h
Bits
7
6
5
4
0
0
0
0
Read
h
7
6
5
FWR
FWR
FWR
3
2
1
5
4
3
OAR
IsensRly
DAC2Rly
OAR
IsensRly
DAC2Rly
Register Definitions
: (dddd = 1010).
10
: (dddd = 1011).
10
3
2
1
0
d
d
d
d
.
h
4
3
2
1
0
FWR
1
1
1
1
0
h
:
h
2
1
DAC1Rly
GndRly
DAC1Rly
GndRly
B
0
Reset
Reset
B-57
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