Stanford Research Systems SR785, Руководство по эксплуатации и программированию

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Data Transfer Commands 5-115
SR785 Dynamic Signal Analyzer
The uploaded data should be saved in its entirety by the host computer. The
saved data can be downloaded back to the SR785 at a later time using WPUT.
The WGET and WPUT commands allow a host computer to save and reload the
Waterfall buffer without using disks.
The upload sequence is as follows:
Host
Send WGET ?. Do NOT wait for IFC to be set in the Serial Poll status.
SR785
Returns n (4-byte binary long int) which is the number of bytes needed to
transfer the Waterfall buffer.
Host
On receipt of n (4-byte binary long int), executes a binary read from the SR785
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.
WPUT ?
The WPUT command downloads Waterfall buffer data to the SR785. This
command is valid only via the GPIB interface.
The download data must be data which was originally uploaded by WGET in its
entirety. The WGET and WPUT commands allow a host computer to save and
reload the Waterfall buffer without using disks.
The download sequence is as follows:
Host
Send WPUT ?. Do NOT wait for IFC to be set in the Serial Poll status.
SR785
Returns 1 (4-byte binary long int) when OK to begin binary transfer to the
SR785. A return of 0 indicates that there is no Waterfall memory allocated.
Host
On receipt of 1 (4-byte binary long int), executes a binary transfer to the SR785
of n bytes (as uploaded using WGET). Asserts EOI with the final byte of the
transfer.
SR785
Receives n bytes and the EOI. If an error is detected during transfer, the
Waterfall buffer reverts to the empty state and a command execution error
occurs. This may occur if there is insufficient Waterfall memory allocated.
Serial Poll until IFC (bit 7) is set in the Serial Poll status before sending another
command.