ROUTe:RMODule:DRIVe:SOURce:BOOT
Syntax
ROUTe:RMODule:DRIVe:SOURce:BOOT <source>, (@<rem_ch_list>)
ROUTe:RMODule:DRIVe:SOURce:BOOT? (@<rem_ch_list>)
Description
This command selects the power source to be used following the next boot (power) cycle or Factory Reset (*RST command) on the specified 34945EXT remote module connected to the 34945A Microwave Switch/Attenuator Driver. The INTernal source is available only for the 34945EXT Master module, which can be powered directly by the 34980A. Each of the 34945EXT Slave modules must be powered by an EXTernal source that you apply to the module. For more information on connecting an external power source to the module, see the Agilent 34980A User's Guide.
Used With:
34945A Microwave Switch/Attenuator Driver
Parameters
|
Name |
Type |
Range of Values |
Default Value |
|
<source> |
Discrete |
{OFF|INTernal|EXTernal} |
OFF (all switching is tri-state) |
|
<rem_ch_list> |
Numeric |
One or more 34945EXT remote module identifiers in the form (@sr00). Select from s100 through s800. |
This is a required parameter. |
Remarks
If the boot drive source is configured to be OFF, then no channels will be driven on that module during reset operations.
The factory default state is set to OFF to ensure that no external microwave devices will be driven until you specifically enable the desired power source. To enable the channel drives again after a boot, use the ROUTe:RMODule:DRIVe:SOURce[:IMMediate] command.
If you have selected the INTernal source but the specified module is not a 34945EXT Master module, a boot error will be generated and the channel drive source will be set to OFF. Note, however, that the boot drive source is not changed.
If you change the source from OFF to INTernal (or EXTernal), the time required to complete a boot/reset/preset may be significant depending on the specified pulse width (see ROUTe:CHANnel:DRIVe:PULSe:WIDTh command) and power supply recovery time (see ROUTe:CHANnel:DRIVe:TIME:RECovery command). If both values are set to their upper limits (255 ms each) for all channels, the time required to reset/preset (or boot) the module may exceed 30 seconds:
64 Channels x (255 ms Pulse Width + 255 ms Recovery Time) = ~33 secondsThis command ensures that if a 34945EXT Slave module is ever attached to a "master" position, it will continue to be driven by the EXTernal supply. This will prevent any external microwave devices from possibly damaging the 34980A's INTernal 24V supply.
If a 34945EXT Master module is configured to boot with the INTernal source and is reconnected as a "slave" module, an error will be generated and the channel drive source will be set to OFF. Once the module is reconnected as the "master" module, you will have to send this command again to specify the INTernal source.
The drive source setting is stored in non-volatile memory on the 34945EXT remote module.
Return Format
The query command returns "OFF", "INT", or "EXT" for the specified channels. Multiple responses are separated by commas.
Examples
The following command selects the EXTernal source on 34945EXT remote module #2 (slot 3).
ROUT:RMOD:DRIV:SOUR:BOOT EXT,(@3200)
The following command returns the drive source on 34945EXT remote module #2 (slot 3).
ROUT:RMOD:DRIV:SOUR:BOOT? (@3200)
Typical Response: EXT
See Also
ROUTe:CHANnel:DRIVe:PULSe:WIDTh