1.4 Continuity Check
Continuity check shares the same configuration with 110.00Ω manual resistance
measurement mode, but with buzzer output to indicate continuity. The buzzer generates a
2KHz sound whenever the digit number is less than 30Ω. The short circuit detection is
more sensitive and the response time is less than 10ms.
1.5 Diode Measurement
Diode measurement mode shares the same configuration with 1.1000V manual voltage
measurement mode.. The buzzer generates a 2KHz sound whenever the digit number is
less than 30mV. The short circuit detection is more sensitive and the response time is
less than 10ms.
1.6 Frequency counter
The time base of the frequency counter is derived from an external crystal oscillator by
4,000,000
Tcounter
=
Fosc
where Fosc is the frequency of the crystal oscillator. Thus, the counter has a 1-second
time base when a 4MHz oscillator is used. The frequency counter can select the proper
range automatically or manually. Auto-range operation extends over six decades, from
1111Hz to 110.00MHz. The following table summarizes the full-scale range of the
frequency counter.
Range
FR112
FR12
FR2
FR3
FR4
Full Scale
11.1 – 111.1Hz
112 – 1111Hz
11.000KHz
110.00KHz
1.1000MHz
11.000MHz
110.00MHz
FR5
FR6
NOTE:
1In the range of FR1, if input frequency is less than 11.1Hz, ES51916 will show 0.0Hz.
2When the reading is more than 111.1Hz, the resolution becomes 1Hz.
v1.2
10
11/09/06
CYRUSTEK [ Cyrustek corporation ]
