beautypg.com

Power-up options, Reverse power protection – VXI 3002 User Manual

Page 58

background image

STATUS BYTE

3-28

Power-up options

These commands allow you to select between powering up with the factory settings (given in Table
3-1) or with the settings of your choice stored in one of the full memory locations (range 100 to
199) or carrier frequency memory locations (range 0 to 99).

POWUP

[not used alone]

:MODE

Select the power up mode. The instrument can power up in either the
factory preset mode or from a selected memory

Data type : Character program data (FACTORY or MEMORY)

Allowed suffices : None

Default suffix : None

:MEM

Set the memory location for a memory power up

Data type : Decimal Numeric Program Data

Allowed suffices : None

Default suffix : None

Example: POWUP:MODE MEMORY

POWUP:MEM 172

POWUP?

Prepares message containing information on the instrument power up
selection in the following format:

Example: :POWUP:MODE MEMORY;MEM 135

Reverse power protection

Accidental application of power to the RF OUT socket trips the reverse power protection circuit.
The following commands enable you to detect when the protection circuit has been tripped, reset
the protection (after you have removed the source from the socket), and find out how many times
the circuit has tripped.

RPP

Reset reverse power protection trip (short form)

:RESET

Reset RPP trip

Data type : None

Allowed suffices : None

Default suffix : None

Example: RPP:RESET

RPP:TRIPPED?

Prepares message containing information on whether the RPP circuit is
currently tripped in the following format:

(0 = not tripped, 1 = tripped)

Example: 1

RPP:COUNT?

Prepares message containing information on the number of times the
RPP circuit has tripped in the following format:

Example: 3

Note that the protection circuit may be activated when the generator is set to a high level and the
RF OUT socket has no terminating load.