Address; Calibrate; A/D Channels; A/D Volts - Keithley DAS-1800ST Series User Manual

same as the ST except for 64 single-ended or 32 differential input
channels, two 12-bit DAC's, and 8 digital outputs. The DAS-1800AO
features DMA data transfer and a 2K sample FIFO buffer for two 12-bit
DACs and is otherwise the same as the ST. The DAS-1800ST-DA has
four 12-bit DACs and the DAS-1802HR-DA has two 16-bit DACs.

Address

The default address used by all DAS-1800 boards is 768 decimal or
0x300 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 most DAS-1800 boards, A/D channel configuration is software
programmable for 16 single-ended or 8 differential analog inputs. (On the
DAS-1800HC, A/D channel configuration is software programmable for
64 single-ended or 32 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 XX-DA, HC, and AO boards provide
analog output. The output range for the XX-DA and HC boards is bipolar
only and is fixed at ±10 volts. For these boards, the minimum voltage is
Configuration
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