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Section II
2 . 7
ENVIRONMENTAL
REQUIREMENTS
WARNING
To prevent electrical fire or
shock
hazards, do not expose
the instrument to rain or
excess moisture.
Model
DRC-93c
2 . 6
Options
2
.
6.1
8223
Rs-232C
Interface.
Provides remote operation of the
same parameters as the
IEEE-488.
The
RS-232C
interface option is
described in Section
VII
of this
manual including connections.
2 . 6 . 2
8225
Analog Output.
Provides
analog output proportional to kel-
2 . 7 . 1
Operating Temperature
vin temperature f display sensor
(10mV/K)
at
<10
ohms output resis-
In order to meet and maintain the
tance.
The
8225
Analog Output is
specifications in Table
1-1,
the
described in Section
VII
of this
DRC-93C
should be operated at an
manual.
ambient temperature range of
23°C
±
5°C.
The unit may be operated
2 . 6 . 3
8229
Scanner
Input Option.
outside the range of
15-35°C
with
Adds four additional channels to
less accuracy.
the "A" input.
Scans up to six
sensors with
programmable dwell
2 . 7 . 2
Humidity/Altitude
times.
The
8229
Scanner Option is
described
in
Section
III
and
The
DRC-93C
is for laboratory use
Section
VII
of this manual.
and no humidity or altitude speci-
f ications have been determined for
2 . 6 . 4
The High Resolution
S e t
Point
this unit.
expands the set point resolution to
0.01
kelvin above
100K
and
0.001
kelvin below
100K.
The equivalent
2 . 8
REPACKAGING
FOR
SHIPMENT
voltage is expanded to
25
micro-
volts out of
3
volts full scale.
If the Model
DRC-93C
appears to be
This results is a setability of
operating incorrectly, refer to the
approximately
0.01
kelvin above
40K
Troubleshooting Guide in Section
and
0.001
kelvin below
28K
for the
5.7.
If the tests indicate that
DT-470
series sensors.
there is a fault with the instru-
ment, contact Lake Shore or a fac-
2 . 6 . 5
8001
Precision Option.
Cus-
tory representative for a returned
tom programming of specific Sensor
Goods
Authorization (RGA) number
calibration curve (s) at factory.
before returning the instrument.
Provides highest degree of readout
accuracy.
when returning an instrument for
service, photocopy and complete the
2 . 6 . 6
The
W60
Output Option
will
Service Form found at the beginning
deliver
60
watts at
1.5
amperes at
of Appendix A .
The form must be
approximately
43
volts into a
25
filled in to ensure efficient solu-
ohm
load.
This is a factory
tion of the problem. The following
installed option.
information must be provided before
Lake Shore will attempt any repair.
COPYRIGHT
3/88 LSCI
2-5
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