MatchBox® series | User Manual
53
To find out how laser operation is affected by different TTL modulation pin
states, check the table below.
Note:
In all cases laser is either ON, using GUI or is autostart enabled.
Laser control via TTL input truth table explanations:
- when TTL input is
open
and laser beam is enabled through software,
laser is emitting light;
- when TTL input is
low
, the laser is not emitting light even if the laser
beam is enabled through software, instead laser is put to warm-up mode;
- when TTL input is
high
and laser beam is enabled trough software, laser
is emitting light.
If a laser is turned off by TTL modulation, but the modulation signal is
somehow disconnected, the laser will start to emit light at the set output
power, causing potential harm to a user or burning facets that the beam
is pointed to.
TTL modulation is not available for narrow spectrum, single longitudinal
mode (SLM) lasers.
Table 4-2. Laser control via TTL input truth table
TTL input
Laser output
Open
Y
Low (0 V)
N
High (+ 3.3 VDC
and above)
Y
Summary of Contents for MatchBox Series
Page 1: ...Version 2 5 October 2020 Continuous Wave laser...
Page 2: ......
Page 4: ...Integrated Optics 2...
Page 12: ...Integrated Optics 10...
Page 32: ...Integrated Optics 30...
Page 58: ...Integrated Optics 56...
Page 68: ...Integrated Optics 66...
Page 71: ...MatchBox series User Manual 69...
Page 72: ...Integrated Optics 70...