Specifications

.Build-in 6 digital frequency counter
.Economic choice for high quality
.20MHz/40MHz/50MHz dual channel oscilloscope

CQ640CF - DUAL CHANNEL OSCILLOSCOPE

 

Features

.20MHz/40MHz/50MHz dual channel
.ALT triggering function
.Encoder for sweep switch
.Fully sealed long life vertical sensitivity switch
.10 times sweep magnification
.TV synchronization, X-Y mode
.Build-in 6 digital frequency counter
.Economic choice for high quality

  

 

Technical Data	CQ620C/620CF			CQ640C/640CF
CRT
Type	6-inch rectangular with internal graticule 8x10div (1div=1cm)
Accelerating voltage	2kV(20MHz) 12kV(40MHz)
Illumination	Front panel control
Z-axis input	Zin: ≈47kΩ ; Vin: ≥5Vp-p; Bw: DC~2MHz
VERTICAL SYSTEM
Sensitivity	±3%;5mV~5V/div
Bandwidth	DC (AC 10Hz) ~ 20MHz(-3dB)			DC (AC 10Hz) ~ 40/50MHz(-3dB)
Rise Time	≤17.5ns			≤8.75 / 7ns
Max. Input Voltage	400V (DC + ACp-p)
Input Coupling	AC, DC, GND
Input Impedance	≈1MΩ/ 25PF
Vertical Mode	CH1, CH2, DUAL ( ALT/CHOP) ADD, CH2 INV
HORIZONTAL SYSTEM
Sweep time	0.2us~0.5s / div±3%; MAGx10:100ns ~ 50ms /div ±5%
Sweep time accuracy	±3%, ±5% at x10MAG (20nS~50nS/DIV uncalibrated)
Sweep magnificaton	10 times
Max sweep time	20nS/DIV
Linear	±5%, ±10% at x10MAG
TRIGGER
Trigger Modes	AUTO,NORM,TV-V,TV-H
Trg-level lock	√
Trigger Source	CH1, CH2, ALT, LINE, EXT
Trigger Coupling	AC
Trigger Slope	"+" or "-"
Trigger sensitivity		20Hz~2MHz		2MHz~20MHz
	CH1,CH2	0.5DIV		1.5DIV
	ALT	2.0DIV		3.0DIV
	EXT	200mV		800mV
	TV sync pulse >1DIV or 1V (EXT)
External trigger input	Input impedance: 1MΩ±3%, 25pF±5pF
	Max. input voltage: 400V (DC+ACpeak) at 1KHz
X-Y OPERATION
Sensitivity	5mV~5V/div, ±4%
X-axis bandwidth	DC ~500KHz
Phase Error	≤3°DC ~ 50KHz
OUTPUT SIGNAL
CH1 signal outputt	√
Calibrator output	1KHz square wave, 2Vp-p±2%
POWER SOURCE	AC 110/220V±10%, 50Hz/ 60Hz, ≈35W
ACCESSORIES	Instruction manual x 1, Power cord x 1,fuse x1, Probe x 2
DIMENSIONS & WEIGHT	310(W) x 150(H) x 455(D)mm, Approx. 8kg