Stanford Research Systems LDC500, Руководство по эксплуатации и обслуживанию

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4.5 Commands 4 – 33
Note that the temperature limits are not e
ff
ective if the sensor model
is set to “none” (resistance units).
Front panel:
"#
E G)
d
.
TMAX 65.0 Example:
Lower Resistance Limit
TRMN(?)
{ f }
Set (query) the lower resistance limit
{
to
f }
, in k
Ω
.
When the LDC500 is operated with the sensor model set to “none”
(resistance units), then
TRMN establishes the minimum sensor resis-
tance for normal operation. If the resistance goes below TRMN , and
TTMN
is set, then the TEC shall turn o
ff
; if
ATMN
is set, then the LD
shall turn o
ff
.
Note that
TRMN
establishes the lower bound on resistance, regard-
less of whether the sensor has a negative or positive temperature
coe
ffi
cient.
Front panel:
"#
3 H)1F
.
TRMN 9.50 Example:
Upper Resistance Limit TRMX(?)
{ f }
Set (query) the upper resistance limit
{
to
f }
, in k
Ω
.
When the LDC500 is operated with the sensor model set to “none”
(resistance units), then
TRMX
establishes the maximum sensor resis-
tance for normal operation. If the resistance goes above TRMX , and
TTMX
is set, then the TEC shall turn o
ff
; if
ATMX
is set, then the LD
shall turn o
ff
.
Note that TRMX establishes the upper bound on resistance, regard-
less of whether the sensor has a negative or positive temperature
coe
ffi
cient.
Front panel:
"#
3E )1F
.
TRMX 12.50 Example:
4.5.10 TEC setting commands
LDC500 Series Laser Diode Controllers