GW Instek GFC-8010H User Manual

FREQUENCY COUNTER

USER MANUAL

CONTENTS PAGE

1. PRODUCT INTRODUCTION........ ......... ...... ...... ...... ....... ...

1-1.Description……………………… ………… …………… . 1-2.Feature…………………………………………………...

1 1 1

2. TECHNICAL SPECIFICATION…………………………... 2

3. PRECAUTIONS BEFORE OPERATION…….…………... 3-1.Unpacking the Inst rume nt… ………………. ………… ... 3-2.Checking the Line Voltage… ……………… ..………… . 3-3.Equipment Installation and Operation………………... 3-4.General Preparation……………………………………..

3 3 3 4 4

4. PANEL INTRODUCTION…………………….. …………… 5

5. APPLICATION………………………………………… ……. 5-1.Sensitivity………………………… ……………… ……… 5-2.Input Sensitivity Characterist ic……………… ………... 5-3.Maximum Input Voltage……………………………….. . 5-4.Typical Applicatio ns………… ………… ………………. .

6. CIRCUIT DESCRIPTION……………………………...… ...

6-1.Theory of Operation………………………………..…....

6-2.Frequency Measurement Accuracy…………………….

7 7 10 11 11

13 13 14

⎯ i ⎯

7. MAINTENANCE…………………………………………….. 7-1.Standard Method for Calibration………… …………… 7-2.Cleaning…………………………………… …………….. .

18 18 18

FREQUENCY COUNTER

USER MANUAL

1. PRODUCT INTRODUCTION

1-1. Description

The GFC-8010H frequency counter is a general-purpose counter with a measurement range from 0.1Hz~120MHz and 20mVrms high input sensitivity. The incorporation of the most updated semiconductor techniques develops a compact, high performance, highly reliable and high resolution instrument.

1-2. Features

Additionally, the frequency counter offers several other features:

z Extremely high resolution to 1μHz.

z Worst case guarantee of X’tal stability specifications.

z The line filter is enclosed in a static shield to resist noise.

z Low pass filter for accuracy measurement of low frequency.

z Compact & lightweight.

z Low power consumption.

z High quality crystal allows an extremely accurate measurement

of frequencies.

USER MANUAL

2. TECHNICAL SPECIFICATIONS

10Hz~10MHz 15mV

Sensitivity (rms)

Input Impedance Max. Input Voltage Coupling System Time Base

Accuracy Counting Capacity Display System Gate Time

Max. Resolution Operating Temp.

Range Storage Temp. Range Power Consumption

Power Requirement Dimension Weight

ACCESSORIES

10MHz~40MHz 20mV 40MHz~80MHz 35mV 80MHz~120MHz 50mV 1MΩ 35PF.

150Vrms. AC coupling. Oscillation Frequency 10MHz.

Aging rate: ±1×10 Temp. stability: 25℃±5℃ ±5×10 0℃~50℃ ±2×10

1Hz + 1 digit + Time base error. 8 digit decimal. Digital LED’s display.

0.1 sec, 1 sec, 10 sec switch selectable. 1μHz on 10Hz range with 10 seconds gate time.

0.1Hz on 100MHz range with 10 seconds gate time. 0℃~40℃

-10℃~+70℃ Approx. 5W.

100V, 120V/220V/230V±10%, 50/60Hz. Approx. 245(W) × 95(H) × 280(D) m/m.

Approx. 1.7kgs. Instruction manual……………× 1 Test lead GTL-101 …………..× 1

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Month.

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FREQUENCY COUNTER

USER MANUAL

3.PRECAUTIONS BEFORE OPERATION

3-1.Unpacking the Instrument

The instrument has been fully inspected and tested before shipping from the factory. Upon receiving the instrument, please unpack and inspect it to check if there is any damages caused during transportation. If any sign of damage is found, notify the bearer and/or the dealer immediately.

3-2.Checking the Line Voltage

The instrument can be appli ed any kind of line voltag e shown in the t able

below. Please check the line voltage indicated in the label attached on the

real panel to replace correct fuses.

WARNING. To avoid electrical shock the power cord protective grounding conductor must be connected to ground.

When line voltages are changed, replace the required fuses shown as below:

Line voltage Range Fuse Line voltage Range Fuse

100V 120V

90-110V

108-132V

WARNING. To avoid personal injury, disconnect the power

cord before removing the fuse holder.

T160mA

250V

220V 230V

198-242V 207-253V

T100mA

250V

USER MANUAL

3-3.Equipment Installation, and Operation

Ensure there is proper ventilation for the vents in the case. If this equipment is used not according to the specification, the protection provided by the equi pment may be i mpai red.

3-4.General Preparation

1) When the impedance is 1MΩ, the maximum voltage applied to the input

depends on the frequency and the position of the SENSITIVITY switch. This relationship is shown in Fig. 6, and the values given in this table must be strictly observed. Initially set SENSITIVITY to 1/10, if the counter doesn’t count, set the switch to 1/1 range and then perform measurement. This procedure will reduce the danger of damaging the input circuit.

2) Use an AC power source within 100V, 120V, 220V, or 230V±10%.

3) Use the instrument within an ambient temperature range of 0~40℃. Do

not put the counter on the top of high temperature equipment and be sure not to block the ventilation of the instrument.

4) Never permit water to enter the interior of the instrument and never

subject the instrument to severe mechanical shock.

5) When the instrument is operated in an especial noisy environments, insert

a noise filter into the power source.

6) When low frequencies are measured, push the low pass filter switch can

attenuate high frequency components to prevent probable false triggering.

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