4.5 Commands
4 – 45
4.5.14
TEC trip-off commands
TEC Trip-o
ff
on Thermometer Fault
TTSF(?)
{
z
}
Set (query) the TEC to trip o
ff
upon thermometer fault
{
to
z
=
(
NO 0
,
YES 1
)
}
.
Note that the TEC will always turn o
ff
upon a thermometer fault
while operating in CT mode; this configuration command only e
ff
ects
operation in TEC-CC mode.
Front panel:
/@ABB
"#B% 4C
.
TTSF?
Example:
1
TEC Trip-o
ff
on Max Temperature
TTMX(?)
{
z
}
Set (query) the TEC to trip o
ff
upon exceeding the maximum tem-
perature
{
to
z
=
(
NO 0
,
YES 1
)
}
.
Note that if the LDC500 is operating with the sensor model set to
“none” (resistance units), then arming
TTMX
will cause the TEC
to shut-down if the sensor
TRAW?
value is greater than
TRMX
, in
k
Ω
. If the sensor has a negative temperature coe
ffi
cient, this will
correspond to the
lowest
temperature of the operating band,
not
the
greatest.
Front panel:
/@ABB
E 4C
.
TTMX YES
Example:
TEC Trip-o
ff
on Min Temperature
TTMN(?)
{
z
}
Set (query) the TEC to trip o
ff
upon exceeding the minimum temper-
ature
{
to
z
=
(
NO 0
,
YES 1
)
}
.
Note that if the LDC500 is operating with the sensor model set to
“none” (resistance units), then arming
TTMN
will cause the TEC to
shut-down if the sensor
TRAW?
value is less than
TRMN
, in k
Ω
. If the
sensor has a negative temperature coe
ffi
cient, this will correspond to
the
greatest
temperature of the operating band,
not
the lowest.
Front panel:
/@ABB
4C
.
TTMN YES
Example:
LDC500 Series Laser Diode Controllers
