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E1442A Command Reference 69Chapter 3
[ROUTe:]SCAN
[ROUTe:]SCAN <channel_list> defines the channels to be scanned. The
channel_list is in the form (@ccnn), (@ccnn,ccnn), or (@ccnn:ccnn)
where cc = card number (00-99) and nn = channel number (00-63 and
99). See the comments for explanation of using the special case of 99 in
the channel list.
Parameters
Comments
Special Case of Using Upper Range 99 in the Channel List: Specifying the
last channel as 99 (for example, @100:199) automatically scans all
channels on the card number specified by cc.
Defining the Channel List: When executing [ROUTe:]SCAN, the channel
list is checked for valid card and channel numbers. An error is generated
for an invalid channel list.
Scanning Operation: With a valid channel list, INITiate[:IMMediate] starts
the scanning cycle and closes the first channel in the channel list.
Successive triggers from the source specified by TRIGger:SOURce
advance the scan through the channel list.
Stopping Scan: See the ABORt command.
Related Commands: CLOSe, OPEN, SCAN:MODE, TRIGger,
TRIGger:SOURce
*RST Condition: All channels open.
Example Scanning Using External Devices
This BASIC language example shows how to scan channels via GPIB
using the E1406 Command Module and a 3457A Digital Multimeter. This
example uses the command module’s Trig Out port to synchronize the
switch module in a switchbox to the multimeter.
The trigger pulse from the Trig Out port triggers the multimeter for a
measurement. See Chapter 2 for typical user connections to the Form C
switch module. The addresses used are 70900 for the E1406 Command
Module, 722 for the 3457A Multimeter, and 70915 for the switchbox.
Name Type Range of Values Default Value
<channel_list> numeric
cc00 - cc63, cc99
N/A