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Calibration Card
Configuration
Register
The Calibration Card Configuration Register provides a non-volatile record
of the module configuration as either an 8-channel device or a 16-channel
device when the module was last calibrated.
Address
Base + 18A
16
Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
READ Undefined Configuration Undefined
WRITE
Configuration: When the module was configured as an 8-channel DAC
during the last calibration, all bits in this field are set to one (1). When the
module was configured as a 16-channel DAC at the last calibration, all bits
in this field are set to zero (0).
Notes This register is not set or used by the hardware. The HP E1418A SCPI
driver, if used to calibrate the module, automatically sets the bits in this
register. If you use register programming to calibrate this module, you may
wish to use this register to record the calibration status.
The Voltage Calibration Status Register, the Current Calibration Status
Register, the Calibration Isolation Status Register, and the Calibration Card
Configuration Register are used together to maintain the overall calibration
status of the module.
Changes in the values of the configuration field indicate a change in the
module configuration and may indicate the need to recalibrate the module.
This register is non-volatile and the field can be compared to the volatile
Configuration Register to determine if the module configuration has changed.
Changes in the terminal module do not affect the contents of this register.
Calibration
Checksum Register
The Calibration Checksum Register provides a non-volatile record of the
checksum computed from all non-volatile calibration memory locations.
The checksum computed is a 32-bit value but only the least significant
16-bits are available.
Address
Base + 18C
16
Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
READ 2nd Least Significant Byte Least Significant Byte
WRITE
Value: The 16 least significant bits of the Checksum Register.
Appendix B HP E1418A Register-Based Programming 147