Supereyes VC2000 Frequency Meter Instruction Manual

VC2000 Frequency Meter

INTELLECTIVE FREQUENCY COUNTER OPERATION MANUAL

CONTENTS

1 GENERAL SPECIFICATION

1

1-1 GENERAL SPECIFICATION

1

1-2 TECHNICAL SPECIFICATION

1

2 OPERATION SPECIFICATION

3

2-1 REQUIREMENT

3

2-2 PANELDESCRIPTION

4

2-3 BACK PANEL DESCRIPTION

5

2-4 OPERATION STEPS

5

2-5 THE MEASUREMENT OF THE MODERN

COMMUNICATING TOOLS

6

2-6 NOTE

7

1 General specification 1-1 General specification The frequency counter is an intellective multi-function instrument with10Hz-2400MHz freguency, including frequency measurement, pulse counting,crystal measurement and so on, and has 4-step gate time, 5-range function select and 8 LED display. All functions dependon a singleCPU. Acrystal controlled temperaturecircuit provides constantcompensation for temperature change. Thereby, reducing measurement errors typically caused by temperature drift. This instrument has the function of operation mode stored, due to this reason .after turning the power on, it can be operated by previous setting . To assure best operation, read this manual before operation. 1-2 Technical specification 1 Measurement 1) Input terminal
This instrument has 3 input channel terminals. CH.A. high frequency terminal 50MHz-2400MHz. CH.B. low frequency terminal 10Hz-50MHz. Crystal Oscillator: crystal measuring terminal 2)Frequency measurement
Step Total 5 steps, No.1-3 steps are for frequency, No.4 step is for counting and No.5 is for crystal oscillator measurement. No.1 step 50MHz-2400MHz, input from CH.A No.2 step 4MHz-50MHz, input from CH.B No.3 step 10Hz-4MHz, input from CH.B
1

Resolution

Step

Function

Frequency

Frequency measurement

2400MHz-1000MHz

1

1000MHz-100MHz

100MHz-50MHz

2

50MHz-4MHz

3

4MHz-10Hz

4

Counting

Max. counts 99999999

5

Crystal oscillator measurement 16MHz-3.5MHz

Gate time : 0.1s 1.0s 5.0s 10s Accuracy :time base deviation frequency 1d 3) Progressive counting measurement 4 steps CH.B input terminal resolution : 1d counting frequency : 10Hz-4MHz 4) Crystal measurement 5 steps insert from crystal oscillator plug-board on the panel. Testing scope: 3.5 MHz-16MHz 2 Input features:Input sensitivity for CH.A, 25mVrms/200mVrms Input resistance: approx. 50

2

0.1s 1kHz 1kHz 1kHz 100Hz 10Hz
10Hz

Resolution

1.0s

5.0s

100Hz 100Hz

100Hz 10Hz

100Hz 10Hz

10Hz 1Hz

1Hz

0.1Hz

–

–

1Hz

1Hz

10s 100Hz 10Hz 10Hz 1Hz 0.1Hz
1Hz

Max. safety voltage : 3 V Input sensitivity for CH.B: No. 2 range: 25 mVrms/80mVrms
No. 3 range: 10mVrms/30mVrms Input resistance: approx. 1M (less than 35pF) Max. safety voltage : 30V
3 Time base short -term stability : 3 10-9/second long-term stability : 2 10-5/month temperature: 1 10-5 /10 -40
4 Display 8 digital LED display with frequency, counting, crystal oscillator, kHz ,MHz ,every range and gate time .
5 Power: breadthAC 220V/110V 10%; frequency: 50Hz/60Hz 6 Temperature: -5 -50
Storage and delivery: -40 ~ 60 7 Humidity: 10-90%R.H
Storage: 5-90%R.H 8 Warm-up time: 20 minutes 9 Size: 270 215 100 mm
Weight: approx. 1.5kg 2 Operation Specification 2-1 Requirement 1) Power : AC 220/110V 10% Max. consumption is 5 W at 50Hz/60Hz. 2) Warm up: before measurement, the instrument should be warm up for 20 minutes to assure the stability of the crystal
oscillator.
3

2-2 Panel description(fig 1.1)

50MHz-2.4GHz

FREQUENCY COUNTER

A
3V MAX

FREQ. COUNT

kHz
MHz ON
OSC

10Hz-50MHz

OFF

B
30V MAX

Cry Osc Gate time Range Run

CRY OSC Reset

18
WARNING

fig 1.1

1.Crystal oscillator key

2. Gate time key

3. Range key

4. Confirm key

5. Reset key

6. Crystal oscillator playboard

7. Crystal oscillator indicator

8. MHz indicator

9. kHz indicator

10. LED display

11.Counting indicator

12. Frequency indicator

13.CH.B terminal (10Hz-50MHz) 14. CH.A terminal (50MHz-2.4GHz) 15. Power switch

16.220V/110V transform switch

17. Power jack

18. Fuse socket

1. Input terminal: CH.A and CH.B are on the left of panel.

The input terminal on the top and left of the panel is CH.A, at the bottom one is CH.B.

Crystal oscillator plug-board is on the bottom and left of the panel.

2. Keys:

crystal oscillator key: When measuring, insert the crystal oscillator under into the play-board, and press the key

simultaneously. After measuring press the key one again to stop.

gate key: It is for setting different counting period on measurement, it is has 4 gate time, i,e . 0.1s, 1s, 5s, 10s.

step key : 5 steps

4

No.1: 50MHz-2400MHz range.CH.A MHz displays

No.2: 4MHz-50MHz range.CH.B MHz displays

No.3: 10Hz-4MHz range. CH.B kHz displays

The above 3 steps arefor frequency measurement, frequency indicator lights

No.4: Progressive countingmeasurement, input fromCH.B counting indicator lights.

No.5: Crystal measurement,input from CH.C(I.e., crystal oscillatorplug-board), crystal oscillator indicator

lights, KHz displays.

After selectgate, step andpressing confirm key , the frequencycounter begins towork, every time,when power on

or press RESET key, the instrument entersinto the previousworking mode automatically.

Reset key: When the instrument isin off normal mode, pressit and returnto the normalwork.

2-3 Back panel description(see the fig1.1)

1. AC 220/110V power plug

2. Power switch

3. Fuse socket

2-4 Operation steps:

Firstly, connect power cord (AC 220/110V) and turn the power on, after warning up for 20 minutes, it starts to work.

2-4-1 Frequency measurement:

Select CH.A or CH.B according to the frequency under measured.

Gate time setting:

The gate time has 4steps. When pressing gate key, gate time displayson the LCDregular (see fig2.1), the display

value is the seconded gate time (fig2.2)

0.1s

1.0s

5.0s

10s

5.0

fig 2.1

fig. 2.2

5

Step setting:

When pressing step key, the last displayvalue on LCDis the selectedstep in fig3.1, the presentstep. There are only

3 steps forfrequency measurement, whenpressing step key, the steps displayregular as:fig 3.2

1

2

3

4

5

2

fig 3.1

fig 3.2

No.4 step is for counting, No.5 is for crystal oscillator frequency, the displaying value is present step.

Press CONFIRM key after theabove 3 stepsare finished, theinstrument starts tooperate and measuresaccording

to the setting, and displays the result.

2-4-2 Testing progressive counting

Connect the testing wire to CH.B terminal. Set gate time. In this case, the gate time is for interval period. Press step key and stepNo.4 start. Press confirm key to start. 2-4-3 Crystal oscillator frequency measurement Insert the crystalunder measured intoCH.C, and press crystal key. Set gate time. Set No. 5 step. Press confirm to start.

After finishmeasurement, press crystal key again tostop. 5 The measurement of the moderncommunicating tools. 1) Analog mobile phone measurement:
The step can be setto 1 , and thegate time canbe selected accordingto requirement.

0.1

1

6

2. 30MHz interphone emitting frequency measurement: the step can be set to No.2

0.1

2

3. Measuring self-oscillation of BP, interphone and controlling and controlled telephone: set the step to 2 0.1 2

connect one of wire of 5p capacitance to the red clamp of cable, and the other one is to be probe to connect frequency

point .

4. After finishing turn the power off and pull the plug out.

6 Note:

1 When measuring high voltage or strong RF signal by cable input, cables should be in series with large resistance to

prevent damage. Wireless input of very strong signals should be measured in coarse mode to avoid damage.

2 When instrument is working abnormally, press reset key once or turn off power to renew the system.

3 When there isno input signal,instrument display maynot zero, it’snormal and hasno effect on measurement or

accuracy.

4 Avoid exposing the instrumentto extreme temperature,damp and dustenvironment and extremelyshock.

5 When working strong disturbing environment, the sensitivity will reduce according .To assure correct, the input signal

should not be less than 200mV.

MB-2000-01 7

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