4 – 34
Remote Operation
TEC Current On
/
O
ff
TEON(?)
{
z
}
Set (query) the TEC current source
{
to
z
=
(
OFF 0
,
ON 1
)
}
.
Front-panel control is by the [TEC On
/
O
ff
] button.
TEON?
Example:
ON
TEC Current Setpoint
TCUR(?)
{
f
}
Set (query) the TEC current setpoint
{
to
f
}
, in A.
When the TEC is operated in TEC-CC mode, the TEC current is
set by
TCUR
. Note that queries return the CC-mode setpoint,
not
the
measured operating current. When properly wired, a positive
TCUR
will (tend to) cool the device, while a negative
TCUR
will heat it.
Front panel:
"#
( *
.
TCUR?
Example:
1.00
.
TEC Temperature Setpoint
TEMP(?)
{
f
}
Set (query) the TEC temperature setpoint
{
to
f
}
, in
◦
C.
When the TEC is operated in CT mode, the TEC current is adjusted
by the control loop to maintain the sensor at a constant temperature,
set by
TEMP
. Note that queries return the CT-mode setpoint,
not
the
measured operating temperature.
Front panel:
!"#
!!!!$
.
TEMP 22.0
Example:
TEC Resistance Setpoint
TRTH(?)
{
f
}
Set (query) the TEC resistance setpoint
{
to
f
}
, in k
Ω
.
When the TEC is operated in CT mode,
and
the sensor model is set to
“none” (resistance units), the TEC current is adjusted by the control
loop to maintain the sensor at a constant resistance, set by
TRTH
.
Front panel:
"#
3 1F
.
TRTH 10.000
Example:
LDC500 Series Laser Diode Controllers
