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Card Configuration
Register
Address
Bit
Base + 0A
16
READ
Note
Appendix B
A/D Trg: Writing a one (1) in this field begins an A/D reading. Writing a zero
(0) in this field during a reading in progress will corrupt the reading. Do not
combine this bit setting with other bits in this register (write only this bit).
Cal Mode Sel: Writing a one (1) in this field sets the calibration system to
calibrate voltage. Writing a zero (0) in this field sets the calibration system
to calibrate current. This bit controls a relay that requires approximately 5 mS
to change states.
Cal Mux En: Writing a one (1) in this field enables the Cal Mux. Writing a
zero (0) in this field disables the Cal Mux.
Cal Mux Chan Address: The address of the channel selected is written to
this field. The channel address, expressed in hexadecimal, has values from
0
through F
corresponding to channels 1 through 16, respectively. This
16
16
field only has effect when the Cal Mux En field is set to one (1).
A/D Scale: This bit changes the A/D scaling. When set to 0, normal A/D
scaling is used. When set to 1, A/D scaling is divided by 13.7. This bit is
used by self-test to test gain and offset DACs.
The Card Configuration Register returns information about the module
configuration and terminal module in use.
15
14
13
12
11
Undefined
Configuration: When the module is configured as an 8-channel DAC, all
bits in this field are set to one (1). When the module is configured as a
16-channel DAC, all bits in this field are set to zero (0).
Terminal: This field returns information about the terminal module.
Screw Type Terminal
No Terminal Installed
The Terminal bits reflect the state of the of the TERMINAL ID 1,
TERMINAL ID 2, and TERMINAL ID 3 lines in the output connector. If
you are not using the screw-type terminal module, these bits may be set to
HP E1418A Register-Based Programming
10
09
08
07
06
Terminal
02
Installed
0
1
05
04
03
02
01
Configuration
Terminal
Bits
01
00
0
0
1
1
132
00
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