Calibration

Resistor Value

Registers

The Calibration Resistor Value Registers store the value of the resistor used to calibrate current output. The Calibration resistor value is a 32-bit value and requires two 16-bit registers. These registers are non-volatile.

Address

Base + 18016

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Address

Base + 18216

Bit

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

READ

 

 

Most Significant Byte

 

 

 

2nd Most Significant Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WRITE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Value: The 32-bit resistor value (in ohms) is written to two adjacent 16-bit registers. The value is a float 32 format.

Voltage Calibration Status Register

The Voltage Calibration Status Register provides a non-volatile record of the voltage calibration status for each channel. This register is non-volatile.

Address

Bit

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

READ

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Ch

Base + 18416

 

16

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

 

WRITE

 

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

Volt

 

 

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

Cal

 

 

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

Stat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ch XX Cal Stat: This field is set to a one (1) when the channel has been successfully voltage calibrated. This field is set to a zero (0) when the channel is not voltage calibrated.

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 store the overall calibration status of the module.

144 HP E1418A Register-Based Programming

Appendix B

Page 144
Image 144
HP E1418A manual Calibration Resistor Value Registers, Voltage Calibration Status Register