Sensoray 421 - Manual (Page 14)

Page 12 Sensoray Model 421 Instruction Manual
Connections: Channel 1, 2, and 3
Each DAC channel makes two connections to the
421: 0 to +10V output, and output return.
Connector Pinout
All external circuitry connects to the DAC channels
through 40-pin header P2. Connector P2 is shared by
the D/A and A/D converter circuits.
The table below defines that portion of connector P2
used for the DAC channels.
Pin on Conn P2 Function
1 Channel 0 output
19 Channel 0 sense
3 Channel 0 return
5 Channel 1 output
7 Channel 1 return
9 Channel 2 output
11 Channel 2 return
13 Channel 3 output
15 Channel 3 return
0-10V Out
Return
Load
Connections: Channel 0
In addition to output and return, channel 0 has a
connection for remote voltage sensing. The remote
sense signal must be connected to the output signal.
Connect the output and sense signals near to the load
for best accuracy.
0-10V Out
Return
Remote Sense
Load
Connections: Channel 0 with External Buffer
In applications that use an external buffer for DAC
channel 0, it is best to sense the voltage at the buffer
output instead of the DAC output.
0-10V Out
Return
Remote Sense Load
V+