DVM13MFC VELLEMAN
3
1. power switch
: Press the button once to turn the device on (depressed position)
and press again to turn it off.
2. HOLD button
: Press this button to toggle in and out of the data-hold mode.
3. RESET button
: The eight LED indicators and all segments of the display are lit
immediately when RESET is pressed and the device automatically
switches to the 10MHz frequency range.
4. CHECK button
: Press CHECK. All segments of the display are lit in the following
order : 0
→
9, “
•
”, the LEDs of the functions printed on the display.
5. A.TOT
: Press the A.TOT button to switch to the total measurement mode.
6. A.PERI
: Press this button to install the period measurement mode.
7. G.TIME
: This buttons is used to adjust the gate time in the frequency mode.
In the period mode, this button is used to install the multiplier
factor :
CHANNEL A INPUT MODE
FREQUENCY RESOLUTION
Gate Time
10MHz Range Resolution
100MHz Range Resolution
0.02sec. 00000.0KHz
000.000MHz
0.2sec. 00000.00KHz
000.0000MHz
2sec. 00000.000KHz
000.00000MHz
PERIOD RESOLUTION
Gate Time
Resolution
0.02sec.
0.0
µ
S
0.2sec.
0.00
µ
S
2sec.
0.000
µ
S
CHANNEL B INPUT MODE
FREQUENCY RESOLUTION
Gate Time
1300MHz Range Resolution
0.025sec. 0000.00MHz
0.25sec. 0000.000MHz
2.5sec. 0000.0000MHz
8. FREQ.
: Used to select the frequency range in the frequency mode. Press
RESET to select the 10MHz frequency range. Press again to
select the 100MHz frequency range and press a third time for the
1300MHz frequency range.
9. A.ATTN
: This button attenuates the input signal. Press it to attenuate the
input signal sensitivity by a factor of 20.
10. L.F.
: Low-pass filter button. When the button is pressed in:
- 100KHz, -3dB
- 150KHz, -3dB at ATTN condition
