ADLINK PCI-9527 - Manual (Page 30)

18 Getting Started
PCI-9527 ADLINK Technology Inc.
User’s Manual Copyright 2008
2.5 Signal Connection
2.5.1 BNC Connector Polarity
The following figure shows the polarity of the BNC connector:
2.5.2 Analog Input Connection
The PCI-9527 input channels can be configured as pseudo-differ-
ential or differential. For ground-reference signal source, user
should configure analog input as differential. For floating signal
sources, the analog input should be configured as a pseudo-differ-
ential input in order to provide a reference. In pseudodifferential
configuration, the (-) port of AI is connected to ground through a
50 Ω resistor.
Signal Source Type AI Channel Configuration
Floating Pseudo Differential
Ground-Reference Differential
Table 2-1: Analog Input Connection
Positive (+)
Negative (-)