1261B User Manual
Using The Enhanced Monitoring System 4-34
Racal Instruments
Ó
1995
Table 4-9, Front Panel Status Messages (continued)
Message
Meaning
IACKX CNT
Interrupt Acknowledge Line X count reached
(X will be “1" to “7")
BERR CNT
Bus Error count reached
SYSFAIL
SYSFAIL* line asserted
ACFAIL
ACFAIL* line asserted
PON TIME
Elapsed power-on time limit reached
TOT PON TM
Elapsed cumulative power-on time limit reached
FILTER
Filter service time limit reached
Each of these messages will be flashed on the display. If more
than one out-of-tolerance condition is detected, each status
message will be displayed in a round-robin fashion.
Programming The
RS-232 Interface
The EMS includes an RS-232 interface which may be used to
send commands and receive replies. The RS-232 interface
operates at one of four baud rates: 1200, 2400, 4800, or 9600.
It supports 7 or 8 data bits, even, odd, or no parity, and 1 or 2
stop bits.
The default baud rate, data bits, stop bits, and parity are
selected using DIP switch SW1. These settings will be used
upon power on or upon reset. Consult the configuration diagram
in section 2 of this manual for switch settings of SW1.
The baud rate, data bits, stop bits, and parity may be
programmed using commands over the VXIbus or over the RS-
232 interface.
Programming The
Baud Rate
The baud rate may be programmed using the command:
SYSTEM:COMM:SERIAL:BAUD <baud rate>
where “<baud rate>” will be one of the following: 1200, 2400,
4800 or 9600. The present baud rate may be read back using
the query
SYSTEM:COMM:SERIAL:BAUD?
The EMS will reply with one of the four possible values.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com