2.2.5
Frequency measuring (signal)
•
Display the
MEASUREMENT CONFIGURATION
dialogue box.
•
Select the
Frequency
measurement function, then the "type of input"
Signal
using the
function and navigation keys.
•
Confirm with ENTER.
Connection is made between the Hz and COM terminals.
The display unit may be in Hz or in beats per minute (BPM).
The measurement resolution is 0.01 Hz.
The input voltage of periodic signals must not exceed 60
Volts peak to peak.
A square wave signal is generated from the input signal by comparing the amplitude of the
input signal with 1 Volt. The result of the comparison is input to a microprocessor which
measures the frequency by counting with respect to a very stable reference signal.
2.2.6
Frequency measuring (dry contact)
•
Display the
MEASUREMENT CONFIGURATION
dialogue box.
•
Select the
Frequency
measurement function, then the "type of input"
Dry Contact
using
the function and navigation keys.
•
Confirm with ENTER.
Connection is made between the Hz and COM terminals.
The hard contact frequency measurement is displayed as a
frequency measurement by generating a logic signal of level
0 when the contact is closed and level 1 when the contact is
open.
The display unit can be in Hz or in Beats Per Minute (BPM).
2.2.7
Pulse counting
•
Display the
MEASUREMENT CONFIGURATION
dialogue box.
•
Select the
Counting
measurement function, then the
"type of input"
Signal
or
Hard Contact
using the func-
tion and navigation keys.
•
Enter the counting time using the alphanumeric keys.
•
Confirm with ENTER.
