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S E C T I O N
III
O P E R A T I N G
I N S T R U C T I O N S
3 . 1
INTRODUCTION
e.g., both a diode thermometer and a
resistance thermometer can be used
This section contains information
on the two inputs. Another possibil-
and
instructions concerning
the
ity with the 9318C and
9220
Options
operation of the Model DRC-93C Temp-
would be the presence of a GR-200A
erature Controller.
Included is a
Series Germanium Sensor as well as a
description of the front and rear
PT-100
Series Platinum Resistance
panel controls and indicators.
Sensor.
Both inputs are updated
independently, which
allows them
both to be displayed or queried
3.2 INSTRUMENT
CONFIGURATION
under
IEEE-488
or RS-232C control.
The addition of an optional 8229
3 . 2 . 1
Input
Card
Configurations
Sensor Scanner Card adds capability
for
4
additional inputs to the
A
The Model DRC-93C can be used with
channel resulting in up to
5
sensors
either one or two input cards. The
of the same type being allowed using
input cards available for use with
the
A
input card.
the DRC-93C are summarized in Sec-
tion
I.
The input cards available
3 . 2 . 4
Old
Version
Input
Cards
allow the 93C to be used with almost
any type of cryogenic sensor. Input
The
8210,
8211 diode input cards can
cards can be mixed, allowing two
be used in the 93C as well as the
different sensor types to be used
8219
series resistance input card.
with the DRC-93C.
The installation of these cards is
covered
in Section
7-3
of
this
3 . 2 . 2
Single Input
Card
manual.
Note that there are Dip
Switch settings on the main board
When only one input card is present
which must be set in order for these
within the unit, it occupies the
older cards to work properly.
INPUT
CARD
#1
slot of the DRC-93C
mainframe and is connected to the
Only one sensor can be used with the
controller under these conditions.
The DRC-93C allows the user to enter
his own sensor calibration via the
3 . 2 . 3
D u a l
Input
Cards
front panel or over the remote in-
terface.
Section
3.9.3
discusses
When two input cards are present in
curve entry via the front panel and
the unit, the input card that oc-
Section
IV
covers entry over the
cupies the INPUT CARD
#1
slot is
IEEE-488
or RS-232C interfaces.
routed to the Sensor
A
input and the
The curve is stored in a battery
input card that occupies the INPUT
back-up non-volatile RAM
(NOVRAM)
CARD
#2
slot is routed to the Sensor
which can be read and written an
B
input. Consequently, both sensors
unlimited number of times. The num-
are energized at all times.
ber of data points stored per curve
can be between
2
and 97; two being
The second input card allows the
the lower limit which defines a
instrument to mix
sensor types,
straight line.
Sensor
A
input of the controller.
3 . 3
CURVE
ENTRY
COPYRIGHT
3/88
3-1
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