Synchronizing Multiple Units - Measurement Computing USB-3105 User Manual

USB-3105 User's Guide

Synchronizing multiple units

You can connect the
configuration and simultaneously update the DAC outputs of both devices. Do the following.
1. Connect the SYNCLD pin of the master USB-3105 to the SYNCLD pin of the slave USB-3105.
2. Configure the SYNCLD pin on the slave device for input to receive the D/A LOAD signal from the master
device. Use InstaCal to set the direction of the SYNCLD pin.
3. Configure the SYNCLD pin on the master device for output to generate an output pulse on the SYNCLD
pin.
Set the Universal Library
When the SYNCLD pin on the slave device receives the signal, the analog output channels on each device are
updated simultaneously.
An example of a master/slave configuration is shown here.
Configure the SYNCLD
terminal pin (pin 49) of two USB-3105 units together in a master/slave
SYNCLD
option for each device.
SIMULTANEOUS
D/A LOAD signal
Master
Slave
S
PMD-1608F
device
(terminal pin 49)
pin for output
Figure 7. Synchronizing the update of multiple devices
SYNCLD pin
Configure the SYNCLD
pin for input
13
Functional Details
Slave
device