HP 4284A - Page 230

Table 7-7. Standard Event Status Register Assignments
Bit No. Bit Weight Description
7 128 Power On (PON) Bit
This bit is set to \1" when the HP 4284A's p ower supply has
been turned OFF and then ON since the last time this register
was read.
6 64 User Request (URQ) Bit
always 0 (zero)
5 32 Command Error (CME) Bit
This bit is set to \1" if the following the command errors o ccur.
An IEEE 488.2 syntax error o ccurred.
The device received a Group Execute Trigger (GET) inside a
program message.
4 16 Execution Error (EXE) Bit
This bit is set to \1" when a parameter follo
wing a header of a
HP-IB command was evaluated by the HP 4284A as b eing
outside of its legal input range or is otherwise inconsisten
t with
the HP 4284A's capabilities.
3 8 Device Sp ecic Error (DDE) Bit
This bit is set to \1" when a device dep enden
t error (except for
the command error, query error, and execution error) has
o ccurred.
2 4 Query Error (QYE) Bit
This bit is set to \1" when reading data from the output buer
and no data was present, or when the data was lost.
1 2 Request Control (RQC) Bit
always 0 (zero)
0 1 Op eration Complete (OPC) Bit
This bit is set to \1" when the HP 4284A has completed all
selected p ending op erations b efore sending the *OPC command.
Remote Control 7-29