Veeco MS40 Operation And Maintenance Manual page 157

the MS-40 ILD into 'Manual Start Mode', the '0' between the 'M' and the 'Z'
would be replaced by the number '1'.
The REJECT set point change command starts with an 'R', has 4 numbers,
and is ended with a 'Z'. The first two numbers make up the reject mantissa
and the last two make up the reject exponent. Here the exponent is assumed to
be negative.
For a REJECT POINT of 2.0 x 10-8, the following string must be sent to the
MS-40:
'R2008Z'
For a REJECT POINT of 5.0 x 10-10, the following string must be sent:
'R5010Z'
For a REJECT POINT of 6.3 x 10-7, the following string must be sent:
'R6307Z'
If an attempt is made to change the REJECT set point to an invalid value, the
MS-40 will clip the value to either its upper or lower limits and will send back
an error indication in its stream of data ('A1'). Its new value will show up in
the appropriate portion of the data stream.
Please Note: The state numbers below are for software revisions
3.7 and earlier. They will differ slightly for revision 3.8 and later.
As an example, let's go through the sequence of a remotely controlled leak test
cycle. First we monitor the present state packet 'I'. We wait for the MS-40 to
power-up and go into the standby states 4, 5, 11, or 12. At this time we can
check the crossover points, the delays, and the REJECT set point to make sure
they are appropriate for the part being tested. If they are not correct, we can
change them using the appropriate commands. We will set the Reverse
crossover pressure to 200 millitorr by sending the string of 'F10200Z' because
this is crossover #1. We will set the REJECT set point to 2.0 x 10
by sending the string of 'R2008Z'. After we send each of the following
strings, we must monitor the MS-40 data stream to verify that both an error
('A1') has not occurred and that the crossover and reject values have been
updated. Once this has been completed, we can now start the test cycle. To
start the test cycle we must send the string of 'K00Z'. At this time we monitor
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the data stream to make sure an error ('A1') was not generated and that the
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'M0Z' = Automatic Start Mode
'M1Z' = Manual Start Mode
d-xix
-8
atm-cc/sec