INFICON XTM/2 Thin Film Deposition Monitor - Manual (Page 115)

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XTM/2 Operating Manual
f. F = cannot change value
now f. the command sent is for a
parameter that cannot be
changed while the
instrument is executing a
Process; place the
instrument in the READY
state in order to change the
value.
g. G = bad checksum g. checksum value does not
match the value sent by the
host’s application program,
may be caused by noise on
the RS232 cable or the
checksum is not calculated
properly by the applications
program.
h. O = data overrun h. I/O port unable to keep
up with data transfer rate;
lower BAUD rate, increase
speed of host’s applications
program by using a
compiled version of the
program, stream lining
program execution, a faster
CPU
Table 6-3 Troubleshooting Computer Communications (continued)
SYMPTOM CAUSE REMEDY