Example | Opening Multiplexer Channels |
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| This example opens channel 00 of a multiplexer module card number 1 and | ||||
| channel 15 of multiplexer module card number 2 in a single switchbox. | ||||
| OPEN (@100,215) |
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| 100 opens channel 00 of card #1; | |
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| 215 opens channel 15 of card #2. |
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. | ||||
Comments | ∙ Query is Software Readback: The [ROUTe:]OPEN? command | ||||
| returns the current software state of the channel(s) specified. It does | ||||
| not account for relay hardware failures. | ||||
Example | Query Multiplexer Channel Open State |
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| OPEN (@100,215) |
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| 100 opens channel 00 of card #1; | |
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| 215 opens channel 15 of card #2. |
| OPEN? (@215) |
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| Query state of channel 215. | |
SCAN | [ROUTe:]SCAN <channel_list> defines the channels to be scanned. The | ||||
| channel_list has the form (@ccnn), (@ccnn,ccnn), (@ccnn:ccnn) or | ||||
| (@ccnn:ccnn,ccnn:ccnn) where cc = card number | ||||
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Parameters |
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| Parameter Name |
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| Range of Values |
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| channel_list |
| Numeric |
| cc00 - cc15 |
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Comments | ∙ Channel List: Valid channel lists are: |
–a single channel, use (@ccnn);
–for multiple channels, use (@ccnn,ccnn);
–sequential channels, use (@ccnn:ccnn);
–a group of sequential channels, use (@ccnn:ccnn,ccnn:ccnn);
–or any combination.
∙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.
∙Downloading a Scanning List: The channel_list is automatically downloaded into RAM on the FET multiplexer modules for
TRIG:SOUR DBUS and TRIG:SOUR IMM trigger modes. The complete list is downloaded onto each module in an instrument. The channels are advanced with no direct intervention by the mainframe CPU during the scan. If an instrument contains mixed modules (FET and Relay Multiplexers), the scan list will not be downloaded.
Chapter 5 | HP E1351A/53A |