Generating/Simulating
60
MC4 User Guide
Resistance Simulation
In resistance simulation MC4 mimics a resistor. The instrument
under test generates the current for the resistance measurement.
MC4 controls the voltage across its terminals so that the resistance
(voltage to current ratio) corresponds to the resistance.
Function:
Resistance Simulation
The correct resistance value is
between the resistance simulation
terminals of the calibrator. Use of 2-,
3- or 4-wire connection is up to the
receiver instrument. Use only the two
leftmost
R, RTD
terminals with every
wiring option. Connect the possible
third and fourth wire according to the
requirements
of
the
connected
instrument, but use only the two
leftmost
R, RTD
terminals.
M e a s u r e
M a x 6 0 V , 3 0 V , 1 0 0 m A
T / C
m V
s e n s e
R , R T D
R m e a s
V , I
,
V , I
,
T e m p e r a t u r e / G e n e r a t e
Notes.
In resistance simulation MC4 monitors the resistance measurement
current. If the current is too high, it cannot simulate the right
resistance value. In that case it shows the message "
High Cur
".
Accurate operation of the simulation electronics requires that the
current supplied by the instrument under test does not vary rapidly.
The simulation result is not accurate if the instrument under test
uses AC current. If the instrument under test uses pulsed
measurement current, it should wait a few milliseconds before
starting the measurement after setting the current.
Next
Resistance Measurement
on page 47.
RTD Sensor Simulation
on page 61.
Tools Menu
on page 67.
Stepping
on page 73
Ramping
on page 76.
Calibration
, see Part D.
Содержание MC4
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