Quick Start 1
Keysight 34970A/34972A User’s Guide 47
 To Close a Channel
On the multiplexer and switch modules, you can close and open individual relays 
on the module. However, note that if you have already configured any multiplexer 
channels for scanning, you cannot independently close and open individual relays 
on that module. 
1 Select the channel. 
Turn the knob until the desired channel is shown on the right side of 
front-panel display. For this example, select channel 213. 
2 Close the selected channel.
3 Open the selected channel.
 will sequentially open all channels on the module in the selected slot.