The input buffer and the output queue |
Input buffer |
The instrument has a 2048-byte input buffer.
Received messages are put into this buffer and executed in order.
However, "ABORT" commands are executed immediately when received.
Output queue |
The instrument has a 2048-byte output queue.
Response messages accumulate in this queue until read out by the controller (PC).
A query error occurs if the length of a response message exceeds 2048 bytes.
The following events clear the output queue:
1. When the controller has read out the entire contents.
2. When a device clear command is issued.
3. When power is turned off and on again.
4. Upon receipt of the next message.