Models 707B and 708B 199BSwitching Matrix User's Manual
Section 2: Using the front-panel interface
707B-900-01 Rev. B / June 2013
2-11
Performing close and open operations on channel patterns
Careless channel pattern operation could create an electric shock hazard that could result
in severe injury or death. Improper operation can also cause damage to the switching cards
and external circuitry. The control of multiple channels using channel patterns should be
restricted to experienced test engineers who recognize the dangers associated with
multiple channel closures.
You can close and open channel patterns the same way you do for individual channels.
When you request a close or open operation, the Model 707B or 708B verifies that the channels exist
for a pattern, but does not verify that the switch path connection is correct. You must ensure the
requested operation is safe for a channel pattern and that a good connection will result for your
application with the channel pattern.
Exercise: Close channel pattern "TEST01" from the front panel
To close channel pattern "TEST01" from the front panel:
1. Press the
PATT
key to display a channel pattern.
2. Use the navigation wheel
to select
TEST01
, the channel pattern you want to close.
Model 707B only:
Note that when you select a pattern, on the crosspoint display, the lights for
the channels included in the pattern are dimly lit.
3. Perform any of the following actions:
•
Open the channels in the channel pattern: Press
OPEN
.
•
Close the channels in the channel pattern without affecting any other channels: Press
CLOSE
.
•
Close the channels in the channel pattern and open any other closed channels on the instrument:
Select
PATT
and select
EXCLOSE
. Press
ENTER
to open or close the channels.
•
Close the channels in the channel pattern and open any other closed channels on the slot: Press
PATT
and select
EXSLOTCLOSE
. Press
ENTER
to open or close the channels.
Set up row, column, and channel labels
You can define labels for rows, columns, and channels. Using labels is a more descriptive way to
refer to switching paths than the default channel identifiers.
Labels must be unique; they cannot have the same as the name of another row, column, channel, or
channel pattern. Labels cannot contain spaces, and they do not persist through a power cycle.
Channel labels can be up to 19 characters. Row and columns labels can be up to 8 characters. On
the crosspoint display, the first four characters of the label are displayed. On the bottom display, the
full label is displayed.
You can only set labels for channels that are installed in the instrument.
