DVM13MFC VELLEMAN
4
11. A INPUT
: BNC input connector for Channel A. Provide a signal to input A to
measure frequencies from 10Hz to100MHz and also periods and
totals.
12. B INPUT
: BNC input connector for Channel B. Provide a signal to input B to
measure frequencies from 100MHz~1300MHz.
13. Display
8-digit LED
: displays the measured value
Gate Indicator
: displays the opened or closed state of the gate. The indicator
lights up when the gate is open.
OFL Indicator
: indicator comes on in case of overflow
1300MHz Indicator : the indicator is lit when the 1300MHz range is selected
100MHz Indicator : the indicator is lit when the 100MHz range is selected
10MHz Indicator
: the indicator is lit when the 10MHz range is selected
KHz Indicator
: indicates the unit of frequency
MHz Indicator
: indicates the unit of frequency
µ
S Indicator
: indicates the unit of period
5. Back Panel Description
1. Power Input with Fuse
: Check whether the power source is compatible with the power
requirements of the device in order to protect the device from
damage and the user from injury. Only then should you connect
the power cable and activate the device.
Disconnect the power cable, remove the test leads and cut off the
input signal to avoid electroshocks when you are replacing the
fuse. Always replace the old fuse with an identical one or one with
the same specifications.
2. Select the power supply : The device can be powered by either 110Vac or 220Vac.
3. OSC.OUT
: This is the output connector for the oscillator. This connector
provides a 10MHz signal and may be used as a reference signal
for another frequency counter. Always respect the output
impedance of 50
Ω
. when using the output signal (10MHz).
4. GND Terminal
