Specifications of Frequency Counter VC2000
This VC2000 is an intelligent multi-function instrument which measures Frequency, Pulse counting, Crystal. It has 4 step gate time, 5 range function select and 8 digits display.
All functions depend on single CPU, A crystal controlled temperature circuit provides constant compensation for the temperature drifting.
Technique specifications:
A. Measurement
1. Input terminal
There are 3 input terminals on this instrument:
CHA. High frequency 50 MHz - 2,4000 MHz
CHB. Low frequency 10Hz - 50 M Hz
Crystal Oscilloscope: for crystal measurement
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Step
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Function
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Frequency
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Resolution
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|
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0.1 S
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1.0 S
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5.0 S
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10 S
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|
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Frequency Measurement
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2400MHz - 1000MHz
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1 KHz
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100Hz
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100Hz
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100Hz
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990MHz - 100MHz
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1 KHz
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100Hz
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10 Hz
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10Hz
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99 MHz - 50 MHz
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1 KHz
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100Hz
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10Hz
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10Hz
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50 Mhz-4 Mhz
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100Hz
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10 Hz
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1Hz
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1 Hz
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2
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4 Mhz - 10 Hz
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10 Hz
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1 Hz
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0.1 Hz
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0.1Hz
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3
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4
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Counting
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Max 99999999
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-
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-
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Crystal Oscillator Measurement
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16M Hz -3.5 M Hz
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10 Hz
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1 Hz
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1 Hz
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1 Hz
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Gate Time: 0.1S,1.0S,5.0S, 10S
Accuracy: Time base deviation X frequency +- 1 d
Progressive Counting measurement
4 steps CHB input terminal
resolution: +- 1d, counting frequency: 10Hz - 4Mhz
Crystal measurement:
Input Features:
Input sensitivity for CHA 25mVrms/200m Vrms
Input impedance: approx. 50 Ohm
Max safety voltage 3 V
Input sensitivity for CHB: No.2 range 25m Vrms/80 m Vrms
No.3 range 10mVrms/30m Vrms
Input impedance: approx. 1 M ohm ( less than 35 pF)
Max Input safety voltage: 30V
Time base:
Short term stability: +- 3 X 10-9/second
Long term stability: +- 2 X 10-5/Month
Temperature: +- 2 X 10-5/10oC - 40o C
Power: 110 - 220V
Size: 270 X 215 X100 mm
Weight: Approx. 1550 g.
