Operation
3-9
3.6 Closing and opening channels
Individual scanner card channels are closed and opened us-
ing the CHAN key. The following paragraphs discuss closing
and opening channels from the front panel as well as with
bus commands.
3.6.1 Closing channels
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Front panel
Use the front panel CHAN key to close specific channels as
follows:
1. From normal display, press the CHAN key. The instru-
ment will display the following menu:
CHANNEL SELECTION
CLOSE-CHANNEL OPEN-ALL-CHANNELS
2. Select CLOSE-CHANNEL, then press ENTER. The
Model 2001 will display the following prompt:
ENTER CHANNEL# 01 (1-10)
3. Use the cursor and range keys to select the channel you
wish to close (1-10), then press ENTER. Any previously
closed channel will open, and the selected channel will
close.
NOTE
Once a channel is closed, use the or
key to manually scan through channels. Al-
so, you can use the NEXT display to view
three successive channels simultaneously.
■
IEEE-488 bus
Use the :ROUT:CLOSE command to close the desired
channel. For example, either of the following program
statements could be used to close channel 3.
HP BASIC
OUTPUT 716; “:rout:close (@3)”
QuickBASIC 4.5
PRINT #1, “output 16; :rout:close (@3)”
3.6.2 Opening channels
■
Front panel
Use the front panel CHAN key to open any closed channels
as follows:
1. Press the CHAN key. The instrument will display the
following menu:
CHANNEL SELECTION
CLOSE-CHANNEL OPEN-ALL-CHANNELS
2. Select OPEN-ALL-CHANNELS, then press ENTER.
The closed channel will open immediately.
■
IEEE-488 bus
Use the :ROUT:OPEN command to open the closed channel.
For example, either of the following program statements
could be used to open channel 3:
HP BASIC
OUTPUT 716; “:rout:open (@3)”
QuickBASIC 4.5
PRINT #1, “output 16; :rout:open (@3)”
(You can also use :ROUT:OPEN:ALL or :ROUT:OPEN ALL
to open channels.)
3.7 Scanning channels
Channels are scanned by configuring channels and program-
ming the Model 2001/2002 to perform a scan. The following
paragraphs outline step-by-step procedures for performing ba-
sic scanning from the front panel and over the IEEE-488 bus.
3.7.1 Front panel scanning
Step 1: Configure channels
Use CONFIG-CHAN to select the measurement functions
for each of the scanner channels as follows:
1. Press CONFIG-CHAN. The instrument will display the
following menu:
CONFIGURE CHANNELS
INTERNAL-CHANS EXTERNAL-INPUTS
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