PPA5xx/15xx communications manual
1-2
The instrument maintains an error status byte consistent
with the requirements of the IEEE488.2 protocol (called
the standard event status register) that can be read by the
mandatory command *ESR? (see section 2).
The instrument also maintains a status byte consistent
with the requirements of the IEEE488.2 protocol, that can
be read either with the IEEE488 serial poll function or by
the mandatory command *STB? over RS232 or LAN (see
section 2).
RS232 data format is: start bit, 8 data bits (no parity), 1
stop bit. Flow control is RTS/CTS (see section 1.3), baud
rate is selectable via the MONITOR menu.
A summary of the available commands is given in the
Appendix. Details of each command are given in the
communication command section of the manual.
Commands are executed in sequence except for two
special characters that are immediately obeyed:
Control T (20) – reset interface (device clear)
Control U (21) – warm restart
The GPIB option uses a GPIB515 to make a GPIB link
available to the PPA500 and PPA1500 range of
instruments.
This is achieved through a serial link to the PPA that
handles all necessary status lines and registers for
IEEE488 communication.
To use the GPIB515:
- Connect the provided 8 pin mini-DIN cable between the
PPA and GPIB515.
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