193
Chapter 7 Plug-in Modules
N2264A Multifunction Module
4
7
N2264A Simplified Schematic
A simplified schematic is shown below. There are three independent
functions on the N2264A: the 12-channel GP Relay (CH00-11), the 3-
channel High-current GP Relay (CH20-22), and the 16-bit Digital I/O
(bits 30-45).
CH20
CH21
CH22
PFLG Handshake Signal
OPEN COLLECTOR/
TERMINAL
CONNECTION
BLOCK
ONE I/O LINE
PCTL or I/O
Handshake Signal
CURRENT SINK
(VMOS FET)
DRIVER OUTPUT
INPUT SENSE
REFERENCE
VOLTAGE
10K
+5V
10K
60V
+5V +5V
Resetable fuse
215
TERMINAL
CONNECTION
BLOCK
10K
+5V +5V
Resetable fuse
215
TERMINAL
CONNECTION
BLOCK
+t
+t
Terminal Block
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