Section 2: General operation
Models 707B and 708B Switching Matrix Reference Manual
2-84
707B-901-01 Rev. B / January 2015
You incur settling times at each close or open operation. If sequential connection is not selected,
action settling times may vary depending on the card type. The total settling time is the sum of the
settling times for each specified channel, plus any user delays that have been set for any closed
channels. To better calculate timing, you can enable sequential channel connections. Deterministic
implies that you can determine the time for a close operation to happen. For example, if you close
three channels and each takes 4 ms to close, with sequential on, it will take 12 ms. With sequential
off, it may be 4, 8 or 12 ms, depending on whether or not the card can close multiple channels at
once.
Opening and closing relays in a sequential manner also uses minimum power. Since only one relay is
closed or opened at any given time, the power used for that action is for a single relay and not
additive.
By default, sequential connections are turned off. The order in which channels are opened or closed
is not guaranteed. This feature also applies to scanning.
The sequential setting affects all channels in the instrument.
To enable sequential connections through the front panel interface:
1. Press the
MENU
key.
2. Use the navigation wheel to scroll to the CHANNEL menu item.
3. Press the
ENTER
key.
4. Select the SEQUENTIAL menu item.
5. Select ON or OFF.
6. Use the
ENTER
key to apply the selection.
7. Use the
EXIT (LOCAL)
key to leave the menu.
To enable sequential connections through the web interface:
1. Open the
UNIT
page.
2. In the upper left corner, select the Sequential check box (next to the Channel Connect Rule list).
To enable sequential connections through the remote command interface:
Send the command:
