Chapter 3
Signal Connections
3-4
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Analog Output Signal Connections
This section describes how to make connections for voltage and current
outputs. The 6704 has both voltage and current outputs, however, the 6703
has voltage outputs only. A 68-pin cable such as the SH68-68-D1 cable is
required. Figure 3-2 shows how to connect the voltage channel (VCH)
outputs.
Figure 3-2.
VCH Connection as a Voltage Output
Voltage Output
You can connect a floating load to your 6703/6704 device at the voltage
output channel.
Warning
Because 6703/6704 devices are not electrically isolated from high voltages, a
load with high common-mode voltages can damage the devices. National Instruments is
NOT
liable for any damages resulting from any such signal connections.
Your 6703/6704 device has a bipolar voltage range of –10.1 to +10.1 V.
Maximum load current is ±10 mA for 16-bit linearity.
Power-up Condition
All voltage outputs are at their user-defined values to full accuracy within
1 s of power-up board reset. Before this time, the voltage outputs can float
to unspecified values. Take this behavior into account when connecting
external devices to the 6703/6704.
AGND
A
Load
±
10.1 V
VCH
Floating Load
PCI/PXI-6703/6704
