Calibration Procedure-OM SOlA
Performance Check Procedure
Table
4-1
(cont)
Description
Performance
Requirements
Applications
Example
Resistance Standard
Range. 0 to 20 MQ; accuracy.
Ohmmeter accuracy
Electro SCientific I ndustries, Inc.
±O.OS%.
check.
Model DB 62 Dekabox.
Temperature Bath
Range. -620 C to +2400 C;
Temperature probe
Neslab I nstruments Inc., Model
accuracy. ±0.2So C.
check and adjustment.
UL T-80 Bath Circulator
with denatured ethyl alcohol
coolant, Model TX-9b Circulator
with Dow Corni ng 7 1 0 fluid
and necessary hoses and
adapters .
•
Requires a
TM
SOo-series power module.
"Connect the
TX�9
cooling
con
to the cooling pump
In
the
ULT-80
to obtain temperatures between
+10QC
and
+400 C.
Dangerous voltages may be encountered in the following steps. Caution must be exercised. D o not contact the
output connectors
of
the voltage calibrator, the input terminals
of the
OM SOIA,
or the internal circuitry
of
the
OM SOIA.
FRONT PANEL INPUT ACCURACY CHECKS
1.
Check Dc Voltage Accuracy
a. Set the de voltage calibrator for a minimum output
voltage.
b< Press the VOLTS DC function push button switch.
c. Connect the de voltage cali brator to the VOL TS;n
and LOW connectors through appropriate cables and
adapters.
d. Press the range push buttons and set the calibrator
voltages as listed in Table 4-2.
e. Check-that the O M SOIA display reads within the
display limits for the ambient temperature as listed i n
Table 4-2.
1.
Set the calibrator for a minimum output voltage.
g. Remove all connections.
4-2
2.
Check Dc and Ac Common Mode Rejection
Ratios
a. Connect a bnc female-te-dual banana connector to
the VOL TSIO and lOW connectors.
b. Connect a dual-bi nding post with bnc male connec
tor to the bnc female connector of the dual banana
connector.
c. Connect a 1 kQ resistor between the binding posts.
d. Connect the red lead of a clip lead adapter to female
bnc connector to the red binding post (one side of the
resistor).
e. Connect the black lead of the clip lead adapter tothe
ground binding post of the OM 501
A.
f. Connect the bnc female connector through a coaxial
cable to the dc voltage calibrator.
g. Press the VOLTS DC function push button.
@
Summary of Contents for DM501A
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