HP E1368A Manual De Usuario
OPEN?
[ROUTe:]OPEN? <
channel_list
>
returns the current state of the channel(s)
queried. The channel_list is in the form (@ccnn). The command returns 1
if the channel is open or returns 0 if the channel is closed.
if the channel is open or returns 0 if the channel is closed.
Comments
•
Query is Software Readback: The
[ROUTe:]OPEN?
command
returns the current software state of the channels specified. It does
not account for relay hardware failures. A maximum of 127
channels at a time can be queried for a multi-module switchbox.
not account for relay hardware failures. A maximum of 127
channels at a time can be queried for a multi-module switchbox.
Example
Query Channel Open State
This example opens channels 100 and 202 of a two-module switchbox (card
numbers 01 and 02) and queries channel state. Since the channels are
programmed to be open 1,1 is returned.
numbers 01 and 02) and queries channel state. Since the channels are
programmed to be open 1,1 is returned.
OPEN (@100,202)
100 opens channel 00 of card #1;
202 opens channel 02 of card #2.
202 opens channel 02 of card #2.
OPEN? (@202)
Query channel 02 of card #2.
SCAN
[ROUTe:]SCAN <
channel_list
>
defines the channels to be scanned. The
channel_list is in the form (@ccnn) where cc = card number (00-99) and nn
= channel number (00-04).
= channel number (00-04).
Parameters
Parameter Name
Parameter Type
Range of Values
Default Value
channel_list
numeric
cc00 - cc04
N/A
Comments
•
Defining the Scan 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.
is generated for an invalid channel list.
•
Scanning Channels: To scan:
–
a single channel, use
[ROUTe:]SCAN (@ccnn)
;
–
for multiple channels, use
[ROUTe:]SCAN (@ccnn,ccnn,
…
)
;
–
sequential channels, use
[ROUTe:]SCAN (@ccnn:ccnn)
;
–
a group of sequential channels, use
[ROUTe:]SCAN (@ccnn:ccnn,ccnn:ccnn)
;
–
or any combination.
•
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
list. Successive triggers from the source specified by
TRIGger:SOURce
advances the scan through the channel list.
•
Stopping Scan: See the
ABORt
command.
•
Related Commands:
TRIGger
,
TRIGger:SOURce
•
*RST Condition: All channels open.
Example
Scanning Using External Device
See the section in Chapter 3 titled “Scanning Channels” for examples of
scanning programs using external instruments.
scanning programs using external instruments.
60 HP E1368A/69A/70A Command Reference
Chapter 4