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66
HP E1328A Register-Based Programming
CAL-ON: Enables gain and offset adjustment for the indicated channel,
providing greater accuracy, but less speed and output range. The CAL-ON
command does not have a parameter. Command format is as follows:
0011cccc
or
b
For example, the command 00110001
calibrated (CAL-ON).
CHECKSUM: Checksums the stored adjustment constants for the
specified channel, and sets the ER* bit accordingly. ER* is asserted (low) if
checksum is bad, and deasserted (high) if good. The CHECKSUM
parameter bit (m) is 0 to check current mode constants, and 1 to check
voltage mode constants. The state of the D/A Converter module's V/I
jumpers is ignored. Command format (register 08
0101cccc
or
b
Parameter format (register 0A
0000000m
or 0m
b
For example, the Command 01010010
Parameter 00000001
or 01
b
adjustment constant for channel 3 voltage.
ZERO-ALL: Writes (uncalibrated) zero to all channels as quickly as
possible. The ZERO-ALL command does not have a parameter. Command
format is as follows:
or
10101010
b
RESTART: This command is used to recover from AC FAIL and IE*
conditions. Command format is as follows:
11110000
or
b
Parameter format is as follows (fixed parameter):
11110111
or
b
CALIBRATE: Used to change a channel's stored voltage and/or current
adjustment constant. The state of the channel's V/I jumpers determines
which constant is entered. These constants are used by the D/A Converter
to maintain the required output accuracy when in the calibrated mode.
The CALIBRATE command and parameter are used to enter new offset,
gain, and checksum values. These values are calculated from actual channel
output measurements, then entered into the Parameter Register.
3c
16
or 31
sets channel 2 mode to
b
16
5c
16
) is as follows (m is parameter):
16
16
or 52
(08
b
16
(0A
Register) performs a checksum on the
16
16
AA
16
F0
16
F7
16
) is as follows:
16
Register) and
16
Appendix B
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