Stanford Research Systems SR780, Operating Manual And Programming Reference

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Data Transfer Commands 5-97
SR780 Network Signal Analyzer
Host
Send APUT ?. Do NOT wait for IFC to be set in the Serial Poll status.
SR780
Returns 1 (4-byte binary long int) when OK to begin binary transfer to the
SR780. A return of 0 indicates that there is no Arbitrary Waveform memory
allocated.
Host
On receipt of 1 (4-byte binary long int), executes a binary transfer to the SR780
of n bytes (as uploaded using AGET). Asserts EOI with the final byte of the
transfer.
SR780
Receives n bytes and the EOI. If an error is detected during transfer, the Arbitrary
buffer reverts to the empty state and a command execution error occurs. This
may occur if there is insufficient Arbitrary memory allocated.
Serial Poll until IFC (bit 7) is set in the Serial Poll status before sending another
command.
CGET ? i, j
The CGET command uploads a Capture buffer to the host computer. This
command is valid only via the GPIB interface. The parameter i selects Ch1 (0) or
Ch2 (1). The parameter j selects upload the whole buffer (0) or just the playback
portion (1).
The uploaded data should be saved in its entirety by the host computer. The
saved data can be downloaded back to the SR780 at a later time using CPUT.
The CGET and CPUT commands allow a host computer to save and reload the
Capture buffer without using disks.
The upload sequence is as follows:
Host
Send CGET ? i, j. Do NOT wait for IFC to be set in the Serial Poll status.
SR780
Returns n (4-byte binary long int) which is the number of bytes needed to
transfer the Capture buffer.
Host
On receipt of n (4-byte binary long int), executes a binary read from the SR780
of n bytes. Expect EOI with the final byte of the transfer.
Serial Poll until IFC (bit 7) is set in the Serial Poll status before sending another
command.
CPUT ? i
The CPUT command downloads Capture buffer data to the SR780. This
command is valid only via the GPIB interface. The parameter i selects Ch1 (0) or