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lidinco
02-02-2015, 12:17
Máy đếm tần số (http://lidinco.com/danh-muc/may-hien-song-oscilloscope-dong-ho-do-thiet-bi-do/may-dem-tan-frequency-counter/) được sử dụng nhiều trong nghiên cứu, chế tại thiết bị tại các máy sản xuất phục vụ công tác đo kiểm tần số và các tham số thời gian với thời gian nhanh chóng và độ chính xác cao.
Tại Lidinco tôi bán máy đếm tần số (http://lidinco.com/danh-muc/may-hien-song-oscilloscope-dong-ho-do-thiet-bi-do/may-dem-tan-frequency-counter/) của các thương hiệu: Tektronix, Agilent, Keysigh …, và các dòng máy đếm tần giá rẻ (http://lidinco.com/danh-muc/may-hien-song-oscilloscope-dong-ho-do-thiet-bi-do/may-dem-tan-frequency-counter/) sản xuất tại Thượng Hải ( TQ).
Lidinco được rất nhiều khách hàng trong cả nước tín nhiệm bởi tác phong phục vụ chuyên nghiệp, chu đáo. Thời gian giao hàng nhanh chóng, giá cả cạnh tranh nhất thị trường.
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1. Máy đếm tần số SP1500B, 1Hz ~ 1.5GHz
May dem tan so (http://lidinco.com/danh-muc/may-hien-song-oscilloscope-dong-ho-do-thiet-bi-do/may-dem-tan-frequency-counter/) (Frequency counter) SP1500B, dãi tần số 1Hz ~ 1,5 GHz, hiển thị 10 số, độ chính xác cao, sản xuất tại Thượng Hải ( Shanghai)
Bảo hành: 12 tháng
Thông số kỹ thuật:
http://lidinco.com/wp-content/uploads/2015/01/May-dem-tan-sp1500b-lidinco-280x138.jpg

Function Measure frequency, period, totalize, self-calibrate, PPM
Frequency range 1Hz~1.5GHz(SP1500B)
Period range 10ns~1s
Totalize capacity 108-1
Sensitivity 40mVrms(1Hz~10Hz)
20mVrms(10Hz-10Hz/100MHz)
30mVrms(100MHz~3GHz)
Input impedance 1MΩ/40pF(Channel A) 50Ω(Channel B)
Input voltage 20mVrms~250Vp-p (Channel A)
30mVrms~1Vrms (Channel B)
Couple mode AC
Measure error ±Time Base accuracy±Trigger error x Measured frequency(or Period)±LSD
Time base stability ±5×10-6/d
Power source 110~127VAC±10%/220~240VAC±10%, 50Hz±2Hz/60Hz±2Hz
Dimensions(WxHxD) 210x80x230mm
Weight 1.8kg


2. Máy đếm tần (http://lidinco.com/danh-muc/may-hien-song-oscilloscope-dong-ho-do-thiet-bi-do/may-dem-tan-frequency-counter/) số Tektronix FCA3003, 0.001Hz ~ 3GHz
Máy đếm tần (Frequency counter) Tektronix FCA3003, frequency range 0.001Hz ~ 3 GHz, display 12 digit, High performance, high reliability
Bảo hành: 12 tháng
http://lidinco.com/wp-content/uploads/2015/01/frequency-counterTektronix-FCA3003-lidinco-280x182.jpg
Thông số kỹ thuật:
Measuring Functions
All measurements are displayed with a large main parameter value and smaller auxiliary parameter values (with less resolution). Some measurements are only available as auxiliary parameters.


Range
Input A, B 0.001 Hz to 300 MHz
300-400 MHz in Manual Trigger mode
Input C 100 MHz to 3 GHz or 300 MHz to 20 GHz
Resolution 12 digits in 1 s measuring time (normal)
11 digits in 1 s measuring time (back-to-back)
Aux Parameters Vmax, Vmin, Vp-p
Frequency Burst A, B, C(FCA3020 and FCA3120 – 20 GHz Only
Characteristic Description
Frequency and PRF of repetitive burst signals can be measured without an external control signal and with selectable-start arming delay
Functions Frequency in burst (in Hz) PRF (in Hz)
Range Input A, B, C: See Frequency spec.
Minimum Burst Duration Down to 40 ns
Minimum Pulses in Burst
Input A, B 3 (6 above 160 MHz)
Input C 3 × prescaler factor
PRF Range 0.5 Hz to 1 MHz
Start Delay 10 ns to 2 s, 10 ns resolution
Aux Parameters PRF
Period A, B, C
Characteristic Description
Mode Single, Average, Back-to-Back (FCA3100 Series)
Range
Input A, B 3.3 ns to 1000 s (single, average)
4.0 µs to 1000 s (back-to-back)
Input C 10 ns down to 50 ps
Resolution 100 ps (single); 12 digit/s avg. (FCA3000 Series)
50 ps (single); 12 digit/s avg. (FCA3100 Series)
Resolution 100 ps (single); 12 digit/s avg. (FCA3000 Series)
Aux Parameters Vmax, Vmin, Vp-p
Ratio A/B, B/A, C/A, C/B
Characteristic Description
Range (10–9) to 1011
Input Frequency
Input A, B 0.1 Hz to 300 MHz
300-400 MHz in Manual Trigger mode
Input C 3 or 20 GHz
Aux Parameters Freq 1, Freq 2
Time Interval A to B, B to A, A to A, B to B
Characteristic Description
Range Normal calculation: 0 ns to +106 s
Smart calculation: –106 s to +106s
Resolution 100 ps single (FCA3000 Series)
50 ps single (FCA3100 Series)
Min Pulse Width 1.6 ns
Smart Calculation Smart Time Interval to determine sign (A before B or A after B)
Positive and Negative Pulse Width A, B
Characteristic Description
Range 2.3 ns to 106 s
Min Pulse Width 2.3 ns
Aux Parameters Vmax, Vmin, Vp-p
Rise and Fall Time A, B
Characteristic Description
Range 1.5 ns to 106 s
Trigger Levels 10% and 90% of signal amplitude
Min Pulse Width 1.6 ns
Aux Parameters Slew rate, Vmax, Vmin
Time Interval Error (TIE) A, B
Normalized period back-to-back measurements, calculated as TIE(k) = k * TREF – ∑Tι, when Tι = Individual Period Back-to-Back and TREF = Reference Period Value.
Positive and Negative Duty Factor A, B
Characteristic Description
Range 0.000001 to 0.999999
Frequency Range 0.1 Hz to 300 MHz
Aux Parameters Period, pulse width
Phase A Relative B, B Relative A
Characteristic Description
Range –180° to +360°
Resolution Single cycle: 0.001° to 10 kHz, decreasing to 1° >10 MHz. Resolution can be improved by averaging (statistics)
Frequency Range Up to 160 MHz
Aux Parameters Freq (A), Va/Vb (in dB)
Totalize A, B (FCA3100 Series)
Characteristic Description
Mode Tot A, Tot B, Tot A+B, Tot A–B, Tot A/B
Range 1 to 1010 counts
Frequency Range Up to 160 MHz
Start Control Manual, start arming
Stop Control Manual, stop arming, timed
Aux Parameters Other Totalize functions
Vmax, Vmin, Vp-p A, B
Characteristic Description
Range –50 V to +50 V, –5 V to +5 V
Range is limited by the specification for max input voltage without damage (see input A, B)
Frequency Range DC, 1 Hz to 300 MHz
Mode Vmax, Vmin, Vp-p
Resolution 3 mV (FCA3000 Series)
1 mV (FCA3100 Series)
Uncertainty (5 V range, typical)
DC, 1 Hz to 1 kHz 1% + 15 mV
1 kHz to 20 MHz 3% + 15 mV
20 to 100 MHz 10% + 15 mV
100 to 300 MHz 30% + 15 mV
Aux Parameters Vmax, Vmin, Vp-p
Time Stamping A, B, C
Characteristic Description
Raw time-stamp data together with pulse counts on inputs A, B, or C, accessible through GPIB or USB only.
Max Frequency 160 MHz
Time-stamp Resolution 100 ps (FCA3000 Series)
50 ps (FCA3100 Series)
Input and Output Specifications
Inputs A and B
Characteristic Description
Frequency Range DC Coupled: DC to 300 MHz
AC Coupled: 10 Hz to 300 MHz
300-400 MHz in Manual Trigger mode for both AC and DC
Impedance 1 MΩ / 20 pF or 50 Ω (VSWR ≤ 2:1)
Max Channel Timing Difference 500 ps
Sensitivity 15 mVRMS (DC-200 MHz)
25 mVRMS (200-400 MHz)
Attenuation X1, X10
Dynamic Range (X1) 30 mVp-p to 10 Vp-p within ±5 V window
Trigger Level Readout on display
Resolution FCA3000 Series: 3 mV
FCA3100 Series: 1 mV
Uncertainty (X1) ±(15 mV + 1% of trigger level)
AUTO trigger level Trigger level is automatically set to 50% point of input signal (10% and 90% for rise/fall time)
Auto Hysteresis
Time Min hysteresis window (hysteresis compensation)
Frequency One-third of input signal amplitude
Frequency Range 1 Hz to 300 MHz
Analog LP Filter Nominal 100 kHz, RC type
Digital LP Filter 1 Hz to 50 MHz cutoff frequency
Max Voltage without Damage
1 MΩ 350 V (DC + AC peak) to 440 Hz, falling to 12 VRMS (X1) at 1 MHz
50 MΩ 12 VRMS (Unprotected Input)
Connector BNC
Auxiliary Functions
Trigger Holdoff
Characteristic Description
Time Delay Range 20 ns to 2 s, 10 ns resolution
External Start and Stop Arming
Characteristic Description
Modes Start, Stop, Start and Stop Arming
Input Channels A, B, or (rear panel) E
Max Rep. Rate for Arming Signal
Channel A, B 160 MHz
Channel E 80 MHz
Start-time Delay Range 20 ns to 2 s, 10 ns resolution
Statistics
Characteristic Description
Functions Maximum, Minimum, Mean, ΔMax-Min, Standard Deviation, and Allan Deviation
Display Numeric, histograms, or trend plots
Sample Size 2 to 2 × 109 samples
Limit Qualifier Off, or capture values above, below, inside, or outside limits
Measurement Pacing Pacing Time Range: 4 µs to 500 s
General Specifications
Environmental Data
Characteristic Description
Class MIL-PRF-28800F, Class 3
Operating Temperature 0 °C to +50 °C
Storage Temperature –40 °C to +71 °C
Humidity 5-95% (10-30 °C)
5-75% (30-40 °C)
5-45% (40-50 °C)
Altitude Operating: 2,000 m
Storage: 12,000 m
Power Requirements
Characteristic Description
Basic Version 90 to 265 VRMS, 45 to 440 Hz, <40 W

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