R - range select, Ange select…… 78 – Measurement Computing DAC488 v.1 User Manual
Page 84
78 DAC488 Commands
DAC488 User’s Manual
R - Range Select
TYPE
Port Command
SYNTAX
Rn
Where
n = 0, 1, 2,
or
3
.
R0
Select DAC Ground range. (DAC488 will output 0 volts only)
R1
(Default) Select DAC
±
1 volt range.
R2
Select DAC
±
5 volt range.
R3
Select DAC
±
10 volt range.
R?
Returns DAC voltage range selection for selected port.
DESCRIPTION
The Range command specifies which output voltage range is used on the selected port. Autoranging must be
disabled (A0) when using the Range command, otherwise a command Conflict Error (E3) will occur. The bit resolution
is: 250 µV/bit, 1.25 mV/bit and 2.5 mV/bit for the
±
1 volt,
±
5volt and
±
10 volt ranges respectively.
Note:
This command may not be used when Autoranging is enabled (A1) for the selected port.
EXAMPLE
PRINT#1,"CLEAR09"
Line 1: Reset the DAC488.
PRINT#1,"OUTPUT09;C0 P1 A0 R2
V4 X"
Line 2: Select Direct Control mode, select Port 1, disable
autoranging, select
±
5 volt range, output 4 volts. The DAC488 will
output 4 volts on Port 1.