Technical Specifications - Velleman DVM13MFC2 Manual Del Usuario

Contador de frecuencia de alta resolución
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Example 2: Measuring a 30 MHz intercom emission frequency
Set the FUNCTION to the 2-step position and select the gate time (adjust manually from 100 ms to 10 s).
The LED display reads:
Example 3: Measuring a self-oscillating frequency (e.g. from a telephone, intercom etc.)
Set the FUNCTION key to the 2-step position. Connect one end of a test cable with 5 pF capacitance to
the red clamp; use the other end to measure the frequency by touching the contact point.
6.
Warnings
When measuring a high-voltage or strong RF signal, make sure that the cables are in series and have
a large capacitance to avoid damage.
Press the RESET button once to reset the device or turn off the device in case the device is not
working appropriately.
When there is no input signal, the display may not necessarily read "0". This is absolutely normal and
does not affect the measurements or the accuracy.
Do not expose the device to extreme temperatures, humidity, dirt, dust, etc. Do not open the device
to avoid lethal electroshocks.
A strong interference will reduce the sensitivity when measuring.
7.

Technical Specifications

channel A (0.01 Hz to 50 MHz):
frequency range
sensitivity
impedance
attenuator
max. input voltage
channel B (50 MHz to 2.4 GHz):
frequency range
sensitivity
coupling
impedance
max. input voltage
Resolution (depends on the gate time setting)
Step
Coupling
1
AC
1
AC
2
AC
3
AC
3
DC
V. 03 – 05/12/2017
DVM13MFC2
DC couple 0.01 Hz to 100 Hz
AC couple 100 Hz to 50 MHz
80 mVrms
1 MΩ
x1, x20
30 V (DC/AC peak)
from 50 MHz to 2.4 GHz
50 mVrms
AC only
50 Ω
3 V
Frequency range
1 GHz – 2.4 GHz
50 MHz – 1 GHz
(not including 1 GHz)
2 MHz – 50 MHz
100 Hz – 2 MHz
0.01 Hz – 100 Hz
(not including 100 Hz)
2-step
30 MHz
Gate time min.
1 kHz
1 kHz
1 kHz
10 kHz
4
Resolution
Gate time max.
100 Hz
10 Hz
10 Hz
0.1 Hz
0.001 Hz
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