3152A User Manual
Racal Instruments
©
2001
Using The Instrument 3-35
The command:
SMEMory:MODE {READ | WRITe}
sets the instrument to receive data from (WRITE) or send data
(READ) to the VXIbus.
The query:
SMEMory:MODE?
queries the shared memory mode and returns READ or WRITE.
The command:.
SMEMory:STATe {OFF | ON}
places the Model 3152A in the shared memory state when ON
is selected. After this, the instrument cannot accept normal
commands. Data must be sent to the synthesizer using shared
memory access. Normal command mode is resumed when the
SMEMory:STATe is changed to OFF.
The query:
SMEMory:STATe?
queries the shared memory state and returns "0" (OFF) or "1"
(ON).
The following sequence should be used for shared memory
transfers.
1.
Slot 0 sends commands:
TRAC:DEF (n),(m) (Shared Memory write only)
TRAC:SEL <n>
SMEM:MODE {READ WRITE}
SMEM:STATE ON
2.
Slot 0 repeatedly sends:
*OPC?
When response is 1, shared memory transfers may start.
3.
Slot 0 sends command:
SMEM:STATE OFF
once data transfer is complete.