Dac Scaling; Control Register (W) Base + A H; Table B-4 Dac Scaling Examples - Agilent Technologies E6198B User Manual

N O T E

DAC Scaling

Control Register (W) Base + A
E6198B Switch/Load Unit User Manual
To set the value of the DAC output, always write the MSB first, followed
by the LSB (register offset 9
the LSB is written. See
Bits 7 6
Write DAC1 DAC1
7 6
The DAC output voltage is determined by the following:
V = (N/16,384 32) - 16
out
where N = Decimal value of DAC code programmed; MSB, LSB.
Table B-4 shows some example values of N, and the
corresponding MSBs, LSBs, and DAC voltage outputs.

Table B-4 DAC Scaling Examples

N Hex
16383 3FFF
10
12288 3000
10
8192 2000
10
4096 1000
10
0 0000
10
To reset the Switch/Load Unit including DACs, Open Drain
outputs and all Load and Pin Cards, write a 1 to this register,
wait 5 mS and then write a 0 to this register. DACs will reset to
0 Vout.
Bits 7 6
Write x x
). The output of the DAC will not update until
h
"DAC Scaling".
5 4 3
DAC1 DAC1 DAC1
5 4
MSB LSB
11111111 11111111
h
00110000 00000000
h
00100000 00000000
h
00010000 00000000
h
00000000 00000000
h
h
5 4 3 2 1 0
x x x x x Reset
Register Definitions
2 1
DAC1 DAC1 DAC1
3 2 1
DAC V
out
+16V
+8V
0V
-8V
-16V
B
0
0
B-7