HP E1418A manual OffsetDAC Registers, GainDAC Registers

Note

Offset_DAC Registers

The Main_DAC Triggered Registers, together with the Trigger Control Register, can be used to provide synchronized output changes on multiple channels.

The Offset_DAC Registers are used to program the next offset value on a channel. There are 16 registers, one for each output channel. The register at base + 8016 programs channel 1, base + 8216 programs channel 2, up to base +9E16 to program channel 16. Values loaded in these registers are applied to the output immediately (no trigger condition is required).

Address	Bit	15	14	13	12	11	10	09	08	07	06	05	04	03	02	01	00
Base + 8016
						msb											lsb
through
Base + 9E16	WRITE		Unused							Output Value

Output Value: Writing a 12-bit value to this field outputs the value on the channel selected by the base address. Values are in the range:

00016 maximum positive offset

80016 nominal (zero) offset

FFF16 maximum negative offset

Note

Gain_DAC Registers

A different offset value is required for voltage and current output operation.

The Gain_DAC Registers are used to program the next gain value on a channel. There are 16 registers, one for each output channel. The register at base + A016 programs channel 1, base + A216 programs channel 2, up to base BE16 to program channel 16. Values loaded in these registers are applied to the output immediately (no trigger condition is required).

Address	Bit	15	14	13	12	11	10	09	08	07	06	05	04	03	02	01	00
Base + A016
						msb											lsb
through
Base + BE16	WRITE		Unused							Output Value

Output Value: Writing a 12-bit value to this field outputs the value on the channel selected by the base address. Values are in the range:

00016 minimum gain

80016 nominal gain

FFF16 maximum gain

Appendix B HP E1418A Register-Based Programming 139