As
the
first
temperature
sensor
or
TEC
is
usually
used
for
a
laser
and
the
second
for
a
crystal,
a
deprecated
option
for
selecting
them
is
the
use
of
the
letters
L
and
C
,
respectively.
9.2.1 Temperature Sensor Commands
In
new
firmware
versions
the
sensor
commands
are
also
available
with
p refix
n
S
instead
of
x
T
where
n
corresponds
to
the
number
of
the
temperature
sensor.
cmd
type
min
max
default
unit
description
x
TA
float
— no parameter —
◦
C
actual temperature
x
TLU
float
−
99
200
40
◦
C
upper temperature limit
x
TLL
float
−
99
200
0
◦
C
lower temperature Limit
x
TSC
k
float
NTC
B3980
sensor coefficients,
k
=
0
. . .
3
x
TSM
word
0
1
0
sensor approximation model
• 0: polynomial model
• 1: Steinhart-Hart equation
9.2.2
TEC
C
ommands
cmd
type
min
max
default
unit
description
x
TC
bool
S
R
S
temperature controller
stop/run
x
TT
float
−
99
200
20
◦
C
temperature target
x
TCA
float
— no parameter —
actual current
x
TCL
float
0
I
P
max
I
P
max
mA
current limit
x
TVA
float
— no parameter —
V
actual voltage
x
TCCK
float
0
255
2
PID parameter: gain factor
x
TCCN
float
0
255
60
s
PID parameter: reset time
x
TCCV
float
0
99
1
s
PID parameter: rate time
9.3
General
C
ommands
cmd
type
min
max
default
unit
description
GD
bool
— no parameter —
set defaults
GF
float
1.2
24
5
V
fan voltage (max. 300 mA)
32
