User manual

Dx34510b_oi_e.doc / Jun-15 Page 18 / 42
5.2. Operational Parameters
5.2.1. RPM, operation as tachometer or frequency counter
(Input A = active input, Input B not in use), (only DX346: Input B = active input)
Menu
Range (OS)*
Default
Frequency:
Set a typical operating frequency for your application.
1 Hz to
25 000 Hz
1000
Display Value:
Set the value you would like to see on your display with
above frequency at the input.
1 ... 99999
1000
Decimal Point:
Select the desired position like shown in the display.
000.000
no decimal point
000000
decimal point at position 1
00000.0
---->
decimal point at position 5
0.00000
Wait Time:
Define a “waiting time“, this is the time in seconds that
the unit will wait from one input pulse to the next,
before it sets the display to zero. When you enter “0“,
the unit will wait forever and show the last result until
it receives the next input.
0.1 … 99.9 sec
1.0
The setting of this parameter automatically limits the minimum input
frequency correspondingly. With “Wait” set to e.g. 0.1 sec. the unit will
respond to frequencies > 10 Hz only and all lower frequencies will just
display 0.
Average Filter:
Selectable average filter to suppress unstable display
with unsteady input frequencies.
No filtering
2, 4, 8, 16 = number of floating average cycles.
*) OS only with DX348
Model DX346 also provides a signed speed display with the +/- sign changing according to
the direction of rotation. To indicate the direction in the display by a sign, +/- 10 V must be
adjusted in the analog menu (see section 5.3).
(0)
(1)