Generation Of Non-Harmonic Shapes - Metrix CX 1651 Manuel De L'utilisateur

Calibrateur multifonctions CX 1651
Overloading the terminals
When external circuit connected to current output terminals is disconnected or there is higher voltage at the load
than permitted, the calibrator disconnects the output terminals and displays „Overload I output" message. The
same message can be displayed when 50-turn coil is used for AC current output at frequencies above 80 Hz. It
depends on the set current and the type of ammeter connected.
If the output terminals are disconnected due to time limitation of output current over 10 A, the calibrator displays
„Current timeout !" message.

Generation of non-harmonic shapes

The multifunction calibrator can generate non-harmonic periodic signals with predefined shape. To allow the
setting of a non-harmonic output shape, the calibrator must be switched to AC U or AC I mode. In both cases, an
indication of the type of output shape (Shape xxxxx) is displayed under the frequency value. Press the respective
display button to change the shape of the output signal.
The calibrator can generate the following shapes:
•
SINE
•
PWM POS
•
PWM SYM
•
PWM NEG
•
RAMP A
•
RAMP B
•
TRIANGLE
•
LIM SINE
Generation of non-harmonic signals has some limitations:
•
non-harmonic voltages can be generated in the 0.1 Hz to 1000 Hz frequency range
•
non-harmonic currents can be generated in the 0.1 Hz to 120 Hz frequency range
•
generation of these signals is limited to the voltage range up to 200 V and current range up to 2 A
•
non-harmonic signals cannot be generated in the P-E (power-energy) mode.
Control in the non-harmonic mode
•
Select AC voltage or AC current mode. The main section of the display shows the following data:
*
main data of set current or voltage, unit of measurement
* relative deviation
* frequency
* selected SHAPE of the output signal
•
Keep pressing SHAPE display button to select the desired shape of the output signal:
The output terminals are automatically disconnected when changing the shape of the output signal or when
changing the relative deviation ∆%, if a non-zero relative deviation is set.
Displayed information
When non-harmonic output shape is selected, the display shows additional information:
114
harmonic
squarewave - positive, with adjustable duty cycle
squarewave - symmetrical, with adjustable duty cycle
squarewave - negative, with adjustable duty cycle
ramp, symmetrical positive
ramp, symmetrical negative
triangular, symmetrical
harmonic with amplitude limitation (truncated sin)
Manuel de l'utilisateur