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1. POWER INPUT WITH FUSE
To avoid user for injury and the instrument for damage, the voltage value of AC power must be examined
with same the power requirements of instrument before connect power cord to live power source and the
power select switch is turned on.
To avoid electrical shock, disconnect power cord from live power source and remove the test leads and any
input signals before replacing the power fuses. Replace only with the same type of fuses.
2. POWER SELECT
Two kinds of power 110VAC and 220VAC can be supplied to the instrument. According to the user’s needs, select it.
3. OSC.OUT
Output connector for reference oscillator. This connector provides a 10MHz signal. It may be used as used as a reference signal
for other frequency counter. When the output signal (10 MHz) is used, is always terminated by 50ohms.
4. GND TERMINAL
To avoid user for injury and the instrument for damage, the voltage value of AC power must be examined
with same the power requirements of instrument before connect power cord to live power source and the
switch is turned on.
Introduction
Before making any measurements always examine the instrument and accessories used with the instrument for damage,
contamination (excessive dirt, grease, ect.) and defects. Examine the test leads for cracked or frayed insulation and make sure the
lead plugs fit snugly into the instrument jacks. If any abnormal exist do not attempt to make any measurements.
Frequency Measurement
• Press the POWER button to the ON position.
• Press the FREQ. button to select the appropriate range that you are desirous to.
• Press the G. TIME button to select the desired gate time.
• Connect the input signal to the front –panel BNC connector.
• Set A.ATTN. to desired position. If input signal level is greater than 300mV, depress the A.ATTN. button to decrease the triggering
sensitivity of the input section by a 20 and reduce errors.
• Read the frequency on display, and observe the unit of measurement indication.
Period Measurement
• Press the POWER button to the ON position.
• Press the A.PERI. button to select the period mode.
• Press the G. TIME button to select the desired gate time.
• Connect the input signal to the A INPUT BNC connector.
• If input signal level is greater set A.ATTN. button to decrease the triggering sensitivity of the input section by a 20 and reduce errors.
• Read the period time on display, and observe the unit of measurement indication.
Total Measurement
• Press the POWER button to the ON position.
• Press the A.TOT. button to select the total mode.
• Connect the input signal to the A INPUT BNC connector.
• If input signal level is greater, set A. ATTN. button to decrease the triggering sensitivity of the input section by a 20 and reduce errors.
• Read the accumulated total on display after HOLD button in.
Check mode
• The self – check mode provides a means of verifying proper overall operation of counter, excluding input section, time base
accuracy, and time base dividers used in the period mode.
• Press the POWER button to the ON position.
• Press the CHECK button to select the self – check mode.
• Eight-digit LED and eight LED indicators are lit from 0 to 9 to eight LED indicators. So circle.
• Press RESET button to stop the check.
Multi-Function Digital Counter
Multi-Function Digital Counter
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