VXI 3002 - Manual (Page 49)

3-19
Memory stores
Carrier store
The non-volatile carrier frequency store has 100 locations numbered 0 to 99 for the storage of
carrier frequency only. This store can be used to apply a set of test conditions to a range of
frequencies. For example, if you wish to use the same modulation at a variety of frequencies you
can use the carrier store to set the instrument to each of the frequencies in turn. When a carrier
store is recalled it will only replace the current carrier frequency - all the other settings will remain
unchanged.
Full store
The non-volatile full store has 100 locations numbered 100 to 199 for the storage of instrument
settings. This store is used to store those parameters which currently affect the RF output; carrier
frequency, RF level, modulations in use, on/off and source information and the two modulation
oscillator frequencies in use.
A full store contains the following information:
Carrier frequency setting
Carrier frequency step size
RF level setting
RF level step size
All modulation settings
All modulation step sizes
Modulation mode and status
The active modulation frequencies
The modulation frequency step size
All sweep settings
RAM store
The volatile RAM store has 100 locations numbered from 200 to 299 for the full storage of
instrument settings. The parameters stored are the same as those for the full store. However, the
RAM store has no long term wear-out mechanism and is therefore recommended for use in ATE
programs where all the settings to be used in a test sequence are initially declared and then recalled.
This results in a reduction of the 488.2 message overhead.
Memory - store
STO Store 0-299 (short form)
:MEM
Store 0-299
:CFRQ
Carrier Freq Store 0-99
:FULL
Full Store 100-199
:RAM
RAM Store 200-299
Data type : Decimal Numeric Program Data
Allowed suffices : None
Default suffix : None
Examples: STO:FULL 112
STO:CFRQ 83