Lambda SRS SR475, Руководство по эксплуатации

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2.4 Command List 2 – 9
Rate
R
Query the maximum rate of the shutter head.
The returned value indicates the maximum rep rate of the shutter
head, in Hz, rounded down to the nearest integer. The rate depends
on the speed mode that is selected; see
§
1.6.
R
Example:
100
The shutter has a maximum rate of 100 Hz.
R
Example:
12
This value is returned when the shutter is in alternate speed mode
(mode
3
), which has a maximum rate of 12.5 Hz.
Temperature
T
Query the shutter temperature.
The returned value is the approximate temperature as measured at
the printed circuit board in the shutter head, in
◦
C.
T
Example:
42
The shutter is at an approximate temperature of 42
◦
C.
Error Word
W
Query the shutter head error word.
The error word is a 15-bit value that is returned as an unsigned
integer. This query also clears the four communications error bits.
Bit Meaning
0
Serial bu
ff
er overflow
1
Serial syntax error
2
Serial communications error
3
Serial Timeout
4
(Reserved)
5
Temperature fault
6
12 V fault
7
Motor fault
8
Firmware fault
9
Position fault
10-15
(Reserved)
Bits 5, 6, 7, and 9 correspond to “fatal” faults that will trip the shutter
to the standby state. Of the fatal faults, only the first one that is
SR475 and SR476 Laser Shutters