National Instruments PC-LPM-16/PnP - Manual (Page 36)

Chapter 4 Signal Connections
PC-LPM-16/PnP User Manual 4-6  National Instruments Corporation
Figure 4-2. Analog Input Signal Connections
Digital I/O Signal Connections
See Table 4-1 for the digital I/O pin descriptions.
The following specifications and ratings apply to the digital I/O lines:
• Absolute maximum +7.0 V with respect to DGND
voltage input rating -0.5 V with respect to DGND
• Digital input compatibility TTL-compatible
• Input current (high or low level)
±
10
µ
A
• Digital output compatibility TTL-compatible
• Output current source capability 8 mA, at V
OH
= 2.7 V
• Output current sink capability 6 mA, at V
OL
= 0.5 V
+
+
-
-
V
M
ACH<0..15>
Input Multiplexer
Operational
Amplifier
I/O Connector
3
4
5
18
1, 2
PC-LPM-16PnP
AIGND
-
+
-
Signal
Source
Measured
Voltage
Vs
1
+
-
V
S2
+
V
S3
a.Book : h.chapter 4 Page 6 Wednesday, November 20, 1996 6:36 PM