FREQUENCY COUNTER

Model VC3165 - Precision Frequency Counter

Channel A (0.01Hz ~ 50MHz)
Frequency Range: DC couple 0.01Hz to 100Hz
                            AC couple 100Hz to 50MHz
Sensitivity: AC: 100Hz ~ 50MHz < 50m Vrms
                 DC: 0.01Hz ~ 1Hz ≤ 500m Vp-p
                 1Hz ~ 100Hz ≤ 80m Vrms
Impedance: 1 Mohms
Attenuator: X1, X20
Max. Safety Voltage: 30V (DC/AC peak)
　

Channel B (50MHz ~ 2.4GHz)
Frequency Range: from 50MHz to 2.4GHz
Sensitivity: 50MHz ~ 1.2GHz ≤ 50m Vrms
1.2GHz ~ 2.4GHz > 80m Vrms
Coupling: AC only
Impedance: 50 ohms
Max. Safety Voltage: 3V

Time Base: Short-Time Stability: ± 3 x 10-9/sec
                  Long-Time Stability: ± 2 x 10-5/month
                  Temperature Drift Coefficient: ± 1 x 10-5, 10°C ~ 40°C
                  Line Voltage Variation: ± 1 x 10-7 for line voltage ± 10%
Gate Time: continuously variable from 100ms to 10s
Display: 8 digits, 19 x 12.5mm LED display with steps, frequency, period, kHz/s and MHz/ms indication
Precision: standard time error (t) x frequency (f) ± 1d
Power Supply: 110V/220V ± 10%, 50Hz or 60Hz
Preheat Time: 20 min
Operation temperature: 0°C ~ 50°C, 10 ~ 90% RH
Storage Temperature: -40°C ~ 60°C, 5 ~ 90% RH
Weight: approx. 1.6kg
Dimensions: 270 x 215 x 100mm
Accessories: this manual, power cord, test probe

Model VC2000 - Frequency Counter

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

Step	Function	Frequency	Resolution
			0.1 S	1.0 S	5.0 S	10 S
	Frequency Measurement	2400MHz - 1000MHz	1 KHz	100Hz	100Hz	100Hz
		990MHz - 100MHz	1 KHz	100Hz	10 Hz	10Hz
		99 MHz - 50 MHz	1 KHz	100Hz	10Hz	10Hz
		50 Mhz-4 Mhz	100Hz	10 Hz	1Hz	1 Hz
2		4 Mhz - 10 Hz	10 Hz	1 Hz	0.1 Hz	0.1Hz
3		4 Mhz - 10 Hz	10 Hz	1 Hz	0.1 Hz	0.1Hz
4	Counting	Max 99999999	-	-
	Crystal Oscillator Measurement	16M Hz -3.5 M Hz	10 Hz	1 Hz	1 Hz	1 Hz

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^-5/10^oC - 40^o C

Power: 110 - 220V

Size: 270 X 215 X100 mm

Weight: Approx. 1550 g.

Frequency measuring range: 0.1Hz to 100MHz in A input, 80 MHz to 3.0GHz in C input.

Period,Total and RPM measurement for input A

9 Digit display with 0.01mHz resolution in 1 Sec(By Ext.Reference signal).

RS-232C serial interface function for communication with computer.

High sensitivity Extemal reference input function(≥1.5Vrms).

Peciprocal technique for high resolution at low counting frequencies .

Self check function executed to perform a automatic self diagnosis of various counter function.

Push-scanning for selecting Function and Gate time.

Low-pass filter(100KHz,-3dB)installed for removing noise signsl in low frequency measuring.

AC/DC coupling function(Selectable AC/CD Coupling)

10:1 Input Attenuation(Selectablex1/x10 Attenuator)

Data hold function

Display	9 digit large green LED display,Overflow,Gate time, mHz,Hz kHz,MHz,ns,us,ms,HOLD
Frequency Measurement
Range	0.1Hz to 100MHz(A input),80MHz to 3.0G(C input)
Gate Time	0.01Sec,0.1Sec,10Sec
Resolution	1nHz to 10Hz
Accuracy	+/-Resolution +/-Timebase Error +/-Count
Input Characteristics
Terminal	A,C
Sensitivity	A Input:20mVrms,C Input:30mVrms
Impedance	A Input: Mohm, Less than 40pF,C Input:50 ohm
Max.Input Voltage	A Input:250Vrms,C Input:3Vrms
Attenuator	A Input:x1,x10
Low PASS Filter	A Iput:100kHz,-3dB
Multi Function for Input A
period	Range:10mSec to 10 Resolution:1pSec deending on gate time and Input signal Accuracu:+/-Resolution+/-Trigger+/-1Cout
Totalize	Range:5 Hz to 10MHz Count capacity:0 to 999999999(Max.)
RPM	6 RPM t 900 x10⁶RPM
Time base Characteristics
Internal Time base	Frequency:100MHz TCO(TCXO;Ooption) Aging Rate: Less thanx5 10-6/month Temp.Stability: Less than 5x10-6(0⁰C to +50⁰C) Line Voltage: Less than1x10-6/ for10%variation
Frequency Standard INPUT	Frequency:10MHz Amplitude:1.5Vp-p Impedance:Approx.600ohm
External Standard Input	Frequency:10MHz Amplitude:1.5Vrms to 5Vrms Impedance:Approx.600ohm
General
Power Requirement	115/230VAC +/-10%,48 to 66Hz
Operating Temperature	O to 50⁰C(Accuracy specified at 25 +/-5⁰C)
Dimension	240(W)x270(D)x90(H)mm
Weight	Approx.2.5kg
Standard Accessories	Power Cord, BNC cable, Fuse, INSTRUCTION Manual
Optional Accessories	RS-232C Software,RS-232C Cable
Packing Details
	Q'ty	Size(mm)	N.W.(kg)	G.W.(kg)	Remark
Inner Packing	1	305(W)x330(D)x165(H)		2.5
Carton Packing	3	320(W)x560(D)x360(H)	7.5	8.5

	Frequency measuring range:0.1Hz~100MHz in A,B input 80MHz~1.5GHz in C input(7150U only) Trigger level adjustment for input A Separate and Common mode selectable for input A and B Period and Total measurement for input A and B Time interval and Ratio measurement for input A and B Slope mode selectable for input A and B	FC 7150U/7015U
9 Digit display with 0.01mHz resolution in 1sec
RS-232C serial interface function for communication with computer(Option)
High sensitivity External reference input function(>20mvrms)
Microprocessor controlled
Reciprocal technique for high resolution at low counting frequencies

SPEC	MODEL	FC-7150U	FC-7015U
Frequency Measurement	Display	9 digit large green LED display (Overflow,Gatetime,mHz,Hz,kHz,ns,µs ms,s,Hold)
	Range	0.1Hz~1.5GHz	0.1Hz~100MHz
	Gate time	0.01sec,0.1sec,1sec,10sec
	Resolution	1nHz~10Hz
	Accuracy	+/-Resolution+/-time base error+/-1court
Input Characteristics	Terminal	A.B,C	A
	Sensitivity	A,B input:20mVrms,Cinput:30mVrms
	Impedence	A,B input:1MΩ<40pF,C input:50Ω
	Max.Voltage	A,input:250Vrms,C input:3Vrms
	Attenuator	A,B input:x1£¬x10
	Slope A,B	+£¬- selectable
	Trogger A	Preset or Variable
	L.P.Fiter	A,B input:100kHz,-3dB
Multi Function for input A	Period	Range:10ms~10s,Resolution:1ps~1ns Accuracy:+/-Resolution+/-Trigger Error+/-1count
	Totalize	Range:5Hz~30MHz,Count capacity:0~999999999(Max)
	RPM	6~900x10⁰RPM
Comparison Function for input A,B	Time Interval(A¡úB)	Range:0.1 s~10s LSD Display:100ns Resolution+/-LSD+/-Trigger Error Accuracy:+/-Reslution+/-1count
	Ratio(A/B)	Range:A input:0.1Hz~10MHz B input:0.1Hz~10MHz LSD display:AxN/B,N=1~1000 Accuracy:+/-1count of A+/-B Tigger Error+/-A
Time Base Characteristics	Internal time base	-Frequency:10MHz TCO(TCXO:Option) -Aging Rate:<3x10^-7/month -Temperature Stability:<x10^-6(0+50⁰C) -Lime voltage:<1x10^-7for 10%variation
	Frequency Output	Frequency:10MHz,amplitude:2.5Vp-p, Impedance:approx.500Ω
	External Input	Frequency:10MHz,input level:20mV~5Vrms, Impedance:approx.500Ω
General	Power Requirement	AC115/230V +/-10%(50/60Hz)
	Temp./Dimension	0~50⁰C(specified at 25⁰C)/225(W)x260(D)x80(H)mm
	Weight/Accessories	Approx.2kg/Power cord,BNC cable,Fuse,Manual

The model FC-1300 is a RF-Frequency Counter designed for system and bench use with max 9 digits, resolution featuring RS-23C and GPIB interfaces with full remote control capability. The frequency range is from 10Hz to 3GHz(Option 3;5GHz)and High speed, High resolution Measurements are possible .it is also equipped with the measurement functions for period, peak voltage and auto trigger, auto limiting test. The model FC-1300 is suited for use in R&D sections and production line such as cellular phone, personal radios, pagers and other equipment.

FC-1300

Wide frequency range CH 1:10Hz~220MHz CH 2:100MHz~3GHz(Option 3;5GHz)

High resolution and high speed measurement using expanding reciprocal technique

Possible to measure the period, peak voltage

Select the trigger level(Auto/Manual)

Built tn auto limit testing

Save and recall function

Interface to RS-232C,GPIB(Option 1;GPIB)

Soft rubber key

Bright easy to view display using fluorescent display tube

CHANNEL 1	Frequency range	10Hz~220MHz
	Resolution	9 digits/sec
	Sensitivity (impedance:50Ω)	100KHz~100MHz:>-20dBm(22mVrms)100KHz~200MHz:>-13dBm(50mVrms)
	Max input level	5Vrms MAX
	Input conditioning	Impedance:1MΩ or 50Ω coupling:AC or DC LPF:100KHz,switchable Attenuator:X1 or X10
	Trigger level	Auto Trigger:Set level by percent of Signal level Manual Trigger:Set level by absolute Voltage
	Measurements	Period(usec),peak voltage(+/-5Vmax,0.01 step)
CHANNEL2	Frequency range	100MHz~3GHz
	Resolution	9digits/sec
	Sensitivity	100MHz~2GHz:>-32dBm 2GHz~3GHz:>-25dBm
	Max input level	5Vrms MAX
Analysis		Automatic limit testing
Gating time		0.1sec,0.5sec,1sec,10sec selectable
Time base	Internal	Frequency:10MHz Stability:Standard:0.5ppm.TCXO
Time base	External	Frequency:10MHz Input level:0.2Vrsm~5Vrms@impedance 1kΩ¡¡
Interface		RS~232C,GPIB(Option1)
Power		100/120/220/230/VAC,50/60Hz
Size and Weight		100mm(H)x210mm(W)x350mm(D),3.6kg
Option		Otion1:GPIB Interface Option2:High stability OCXO(+/-x10^-8) Otion3:5GHz channel