Nado NDRA91, Руководство пользователя

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Description of commands
NDRA91-92
Manual LDM301-302 Manual
Page 72 ASTECH GmbH
Table 23 : Spread of distance measurement
f [Hz] = MF SA Output
frequency [Hz] σ SA [mm]
2000 1 2000 60
2000 2 1000 43
2000 4 500 30
2000 20 100 14
2000 200 10 5
TD – External trigger delay / level / mode
With the command TD, the behaviour in the external trigger mode (DF) is
parameterized.

x is the delay for trigger an single measurement in milliseconds

y denotes the edge for triggering:
0: the trigger is released at a falling edge (from High to Low).
1: the trigger is released at a rising edge (from Low to High)

z sets the mode with respect to SA:
0: each trigger pulse causes one single laser pulse and after SA
measurements one output will follow
1: each trigger pulse causes a number of SA laser pulses and after
that one output
Query: TD
Set: TDx y z
Parameter value
range x:
0 … 300.00 msec; resolution: 0.01 msec
Parameter value
range y, z:
0 or 1
Standard: 0.00 0 0
If a trigger impulse is received before the actual measurement process is
finished, the
NDRA91
ignores the new trigger impulse. A new measurement