User Manual

GMC-I Messtechnik GmbH 9
4 Frequency Generator (positive square-wave pulses) [Hz]
Voltage and frequency can be set independent of each other for
frequency generators.
The output signal is a square wave. Resistance of the connected
circuit should not be any less than 1 k.
➭ Connect the device to be calibrated with the measurement
cable in the same way as specified for the voltage simulator.
➭ Select the HZ calibration function with the rotary switch.
➭ Switch the calibrator on by pressing the ON / OFF | LIGHT
key.
➭ Set the voltage range (300 mV, 3 V, 10 V or 15 V):
Switch to the voltage range menu [
select range] by pressing the
SELECT | ESC key twice. Select the desired voltage range
with the  keys. Acknowledge your selection with
OUT | ENTER. The display is switched to the voltage
amplitude entry window.
➭ Set voltage amplitude (0  15 V):
Select the digit to be changed with the  keys, and change
the respectively selected digit with the keys.
Acknowledge your selection with OUT | ENTER. The display is
switched to the frequency entry window, but the selected
voltage amplitude still appears in the auxiliary display.
➭ Set frequency (1  1000 Hz):
ON indicates: Voltage is applied directly to the output using the se-
lected frequency!
Select the digit to be changed with the  keys, and change
the respectively selected digit with the keys.
➭ The output can be deactivated with the OUT | ENTER key
[
out.off], or activated once again.
Note!
The following error messages are possible:
“HiCurr” (high current – current at overload limit) where
I
max.
=18mA, “0ut 0l” and 3 acoustic signals (out of
limit – limit value exceeded) where I > 27 mA; the simulator
is switched off.
Attention!
!
No interference voltage may be applied to the calibrator
jacks in this operating mode.
The calibrator is protected against brief application of a
large interference voltage with a replaceable fuse in the
event of operator error (see section 12.3).
Abbreviated Instructions
Set the voltage range (starting from frequency display).
select range: 15 V    60 mV
Set voltage amplitude (starting from frequency display).
000.00 V  
Set frequency.
0000.0 Hz  
SELECT
ESC
SELECT
ESC
OUT
ENTER
SELECT
ESC
OUT
ENTER