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Configuration
C-3
Address
The default address used by all DAS-1800 boards is 768 decimal or
0
×
300 hex. If you have more the one Keithley board or another peripheral
card at the same address, you will have to change the DIP switch settings
for the device address on the board.
Calibrate
The DAS-1800 does not support auto-calibration. The Device
Configuration dialog box displays this setting as disabled.
A/D Channels
On the DAS-1800HC, A/D channel configuration is software
programmable for 64 single-ended or 32 differential analog inputs. On
other DAS-1800 boards, A/D channel configuration is software
programmable for 16 single-ended or 8 differential analog inputs.
A/D Volts
You must specify the minimum and maximum analog input, full-scale
voltages at unity gain. For the DAS-1801 boards, the minimum voltage is
-5V and the maximum voltage is +4.9976V. For the DAS-1802 boards,
the minimum voltage is -10V. The maximum voltage is +9.9951V (12-bit
A/D) and +9.9997V (16-bit DAS-1802HR).
D/A Volts
You must specify the minimum and maximum analog output, full-scale
voltages at unity gain. Only the HC, AO, and XX-DA boards provide
analog output. The output range for the HC and XX-DA boards is bipolar
only and is fixed at ±10 volts. For these boards, the minimum voltage is
-10V. The maximum voltage is +9.9951V (12-bit DACs) and +9.9997V
(16-bit DAS-1802HR-DA). The output range for the DAS-1800HC
boards is bipolar only and is software programmable for ±10 volts or ±5
volts. For this board, unity gain minimum voltage is -5V and maximum
voltage is +4.9976V.
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