User`s guide

Appendix D Output On/Off Synchronization

144 Model N6705A User’s Guide

Digital Connections and Configuration

NOTE

Only pins 4 through 7 can be configured as synchronization pins. You cannot

configure more than one On Couple and one Off Couple pin per mainframe.

The polarity of the pins is not programmable; it is set to Negative.

The digital connector pins of the synchronized mainframes that

contain coupled outputs must be connected together as shown in the

following figure. In this example, pin 6 will be configured as the

output On control. Pin 7 will be configured as the output Off control.

The ground or Common pins also need to be connected together.

Only two of the digital connector pins on each mainframe can be

configured as “On Couple” and “Off Couple” on each synchronized

mainframe. The designated pins will function as both an input and an

output, with a negative transition on one pin providing the

synchronization signal to the other pins.

Operation

Once configured and enabled, turning the output on or off on any

coupled output will cause all coupled outputs on all configured

mainframes to turn on or off according to their user-programmed

delays. This applies to the front panel On/Off keys, the Web server,

and to SCPI commands.

Turning the outputs on or off using the front panel All Outputs

On/Off keys will cause all coupled outputs as well as non-coupled

outputs on that mainframe to turn on or off.

1 2 3 4 5 6 7

N6705A #1 N6705A #2 N6705A #3

On Couple

Off Couple