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AUDIO FREQUENCY OSICLLATOR

SPECIFICATIONS:
  • Wave Forms : Sine, Square Output.
  • Frequency Range : 2 Hz to 200KHz for all functions in 5 decade.
  • Accuracy : Within ±2% in first 5 ranges & ±4% last range
  • Output Amplitude : Standard 0 – 20Vpp with adjustable
  • Output Impendence : 600 ohms (+5%) option: 50Ω.
    • Square Wave :
  • Rise time :100ns.
  • Fall time :60ns.
  • Duty Cycle :49% to 51%
  • Fall Time :50ns
    • Applications :
    • Useful in educational institutions and industrial applications, can used in Audio / Tape recorders servicing Lab experiments.
      • .

DUAL TRACE ANALOG OSCILLOSCOPE GOS-1020MHz/1030MHz

Features:

  • 20 MHz/30MHz Dual channels
  • 10 times sweep magnification
  • TV synchronization, X-Y mode
  • High luminance, internal graticule CRT
  • Japanese electronic encoder, light, handy and reliable.
  • Fully sealed long live vertical mode switch.
  • ALT triggering function. Two independent signals simultaneous observation.
 
Technical Specifications: GOS-1020/1030MHz

CRT

TYPE 6-inch rectangular with internal graticule 8×10DIV

Accelaration Voltage Approx .2KV (20MHz)/Approx.12KV(30MHz)

Phospher P31

Trace rotation Adjusted at front Panel

Vertical System

Sensitivity and accuracy ≤3%,5mV~5V/DIV,10Steps in 1-2-5 Sequence

Band Width DC(AC 10HZ)~20MHz;DC(AC10Hz)~30MHZ;DC

Rise Time Approx .17.5ns/Approx.8.75ns/Approx.7ns

Input Impedance Approx .1MΩ/Approx.25pF

Maximum input Voltage 300Peak (AC:Frequnecy 1KHz or lower)

Input coupling AC,GND,DC

Vertical Mode CH1,CH2,DUAL(ALT/CHOP),ADD,CH2 1NV

Chopping Repetition Frequnecy Approx.250KHZ

Horizontal System

Sweep Time 0.2µSec/Div,20 Steps in 1-2-5 Sequence

Sweep time accuracy ±3%,±5%at X10MAG(20ns~50ns/DIV uncelebrated

Sweep Magnification 10times

Max.Sweep Time 20ns/DIV

Linearity ±5%,X10MAG:±10%(0.2s~1Us)

Vernier Sweep time control ≤1/2.5 or panel-indicated value

Trigger

Trigger Mode Auto;NORM;TV-V;TV-H

Trg-level lock No

Trigger Source CH1,CH2,LINE,EXT

Trigger Coupling AC :20Hz to full bandwidth

Trigger slope “+” or “ –“

Trigger sensitivity 20hz~2MHz 2MHz20MHz 20MHz~50MHz

CH1,CH2 0.5DIV 1.5DIV 3DIV

ALT 1.5DIV 1.5DIV 3DIV

EXT Trigger Input

EXT 200mV 800mV 1.5V

TV: Sync Pulse more than I DIV(EXT:1V)

 

Input impedance: Aprrox.1MΩ/approx.25PF

Max. Input Voltage:300V(DC+AC peak),at 1 KHZ

X-Y Mode

Sensitivity 5mV- 5V /DIV,±4%

X-axis bandwidth DC~500KHz

Phase error ≤30 at DC ~50KHz

OUTPUT Signal

CH1 Signal OUT PUT No

Calibration OUTPUT 1KHz Square wave, 2Vp-p±2%

Power Source

AC 220V ±10%(Standard), AC110/220V±10%(Optional), 50/60Hz, approx. 35VA

Dimension

445(D)X310(W)X150(H)mm

Weight

Approx.8Kg

     
 

Multimeter Digital - (Model : DM-97 )

Characteristics:
1 . GENERAL,1.LCD displaylaying

  • 1.2. Max. displaying. 1999(3 ½ digit)auto polarity indication.
  • 1.3. Measuring method: dual slope A/D conversion.
  • 1.4. Operation uninterrrruptable purpose.
  • 1.5. Using Panel testing technology.
  • 1.6. Sampling rate : approx. 3times/second.
  • 1.7. Over range indication: the MSD displays “OL”.
  • 1.8. Low battery indication + + appears.
  • .9. Operation environment (0~40) ºC, r.h. <80%.
  • 1.10. Power : 9Vx1 (NEDA1604/6F22 or equivalent model),
  • 1.11. Size : 175x93x55mm.
  • 1.12. Weight approx, 400g (Including battery).
  • 1.13. Accessories: Operation manual, hoister, gift box, 10A test leads and 9V battery.
 
  2. TECHNICAL CHARACTERISTIC  
     
  2.1. Accuracy : ±(a% x rdg+d) at (23±5) °C, R,H, <75%, one year guaranteed from the production date. 2.2. TECHNICAL DATA
 

RANGE

ACCURACY

RESOLUTION

200mV

±(0-5%+3)

100μV

2V

 

1mV

2V

1mV

20V

10mV

200V

100mV

1000V

±(0.8%+10)

1V
Input resistance: 5m Ω at mV range, other range : 10mΩ
Overload protection: 250V dV  or AV peak value at 200m V range.
1000V DC or AC peak value at other ranges.
     
  2-2-2. ACV 2-2-3. DCA
 
RANGE

ACCURACY

RESOLUTION

2V

 

±(0.8%+5)

1mV

20V

10mV

200V

100mV

750V

±(1.2%+10)

1V
RANGE

ACCURACY

RESOLUTION

20μA

 

±(0.8%+10)

0.1μA

2mA

1μA

20mA

10μA

200mA

±(1.2%+8)

100μA

20A

±(1.2%+5)

10mA

  Input resistance 10 M Ω
Overload protection: 1000V DC or AC peak value
Frequency response: (10~200) Hz
Display: Sine wave RMS (mean value response)		 Max. Input volt drop: 200mV:
Max. Input current: 20A (the test time should ebe within 10 seconds)
Overload protection: 0.2A/250V fast-melt flues
     
  2-2-4. ACA 2-2-25. RESISTANCE (Ω)
 
RANGE

ACCURACY

RESOLUTION

20mA

±(1.0%+15)

10 μA

200mA

±(2.0%+5)

100μA

20A

±(3.0%+10)

10mA

Max. Measuring volt drop : 200mV
Max. Input current 20A (the test time should be within 10 seconds)
Overload protection: 0.2A/250V: 20A/250V fast-blown fuse
Frequency response: (40-200)Hz
Display: Sine wave RMS (mean value response)
RANGE

ACCURACY

RESOLUTION

200Ω

±(0.8%+5)

0.1Ω

2K Ω

 

1Ω

20KΩ

10Ω

200KΩ

±(0.8%+3)

100Ω

2MΩ

1KΩ

20MΩ

±(1.0%+25)

10KΩ
     
  2-2-7. DIODE AND CONTINUITY TEST 2-2-8. Triode hFE test
 
Range

Displaying Value

Test condition

 

Positive Voltage drop of diode

The Positive DC current is approx.  1mA, negative voltage is approx. 3V

Buzzer sounds, the resistance is less than 30 Ω

Open voltage is approx. 3V
Range

Display range

Test condition

hFE NPN or PNP

0~1000

Basic current is approx. 10μA, Vce is
Approx 3V
     
  Overload protection: 250V DC or AC peak value  
  Warning : DO NOT input any voltage at this range for safety  
  Open Voltage: less than 0.7V
Overload Protection : 250V DC and AC peak value
NOTE : at 200 Ω range, the leads should be short-circuit, and measure the down-lead resistance, then, subtract from the real measuring.
2-2-6. CAPACITANCE (c).		  
 
RANGE

ACCURACY

RESOLUTION

2nF

±(5.0%+40)

1pF

20nF

 

±(2.5%+20)

10pF

2-200μF

1-100nF

2000 μF

±(5.0%+10)

1μF
Overload Protection : 36V
 
 

Digital Voltmeter

SPECIFICATIONS:

Size                 : sleek and compact                                   
Resolution      : 3 ½ digital
Type               : Bench top
Supply            :  Main Operated 230V AC
Range             : Single / Dual
Cabinet           : Metal cabinet with power coated
Ranges            : Standard ranges for Voltmeter     
(AC/DC)         :  0 – 2mV/ 20mV/ 200mV/ 2V/ 20V/ 200V
 

Digital Ammeter

SPECIFICATIONS:

Size                 : sleek and compact
Resolution      : 3 ½ digital
Type               : Bench Top
Supply            : Main Operated 230V AC
Accuracy        : 0.2%
Range             : Single / Dual
Cabinet           : Metal cabinet with Powder coated 
Ranges            : Standard range for Current meter
(AC/DC)         : 0 – 2µA/ 20µA/ 200µA/ 2mA/ 20mA/ 200mA
                         / 2A/ 20A/ 200A

DIGITAL FUNCTION GENERATOR- 1MHz

SPECIFICATIONS::
  • Wave Forms : Sine, Square, Triangle, & TTL Output
  • Frequency Range : 1 Hz to 1 MHz for all functions in 6 decade steps with calibrated linear variation in between steps.
  • Frequency Counter : Four digit display for output frequency.
  • Accuracy : Within ±2% in first 5 ranges & ±4% last range
  • Output Amplitude : Standard 0 – 20Vpp with adjustable offset.
  • DC Offset : Continuously variable + 10 V in open circuit, combined signal plus offset is limited to 20 Vpp.
  • Output Impendence : 600 ohms (+5%) option: 50Ω.
  • Attenuation : 0- 20db
  • Output coupling : DC
  • Sine Wave : Less than 1% from 10 Hz to 100 KHz. Harmonics more than 30 db down from fundamental for 100 KHz to 1 MHz.
  • Amplitude Flatness : Sine, Square, Triangle – Ref 10 KHz within 0.5 db from 10 Hz to 10 KHz within + 2 db from 10 Khz to 100 KHz Sine, Triangle and square wave amplitude match within 1 db @10 KHz. .
  • Square Wave :
  • Rise time :100ns.
  • Fall time :40ns.
  • Duty Cycle : 49% to 51%
  • Symmetry : -NA-
  • Triangle : 1%
  • Aberrations : Within + 5% of Vpp of the waveform
  • Triangle Linearity : 0.5%
  • VCO Input : Facilities remote programming of frequency / frequency modulation to sweep frequency around dial setting.
  • Characteristics :
  • Sweep frequency ration: 100:1
  • Impedance : 1 K phms Input level : Min 20 m V, Max : + 5V.
  • TTL Square Wave :
  • Rise time : 50ns
  • Fall Time : 50ns
  • Amplitude : 5 Vpp (+3%)
  • Power : 230V+10%, 50MHz, AC single Phase
  • Applications : Useful in educational institutions and industrial applications, can used in Audio / Tape recorders servicing Lab experiments.

EXCITATION UNIT

SPECIFICATIONS:
  • Wave Forms : Sine, Square Output.
  • Frequency Range : 2 Hz to 200KHz for all functions in 5 decade.
  • Accuracy : Within ±2% in first 5 ranges & ±4% last range
  • Output Amplitude : Standard 0 – 20Vpp with adjustable
  • Output Impendence : 600 ohms (+5%) option: 50Ω.
    • Square Wave :
  • Rise time :100ns.
  • Fall time :60ns.
  • Duty Cycle :49% to 51%
  • Fall Time :50ns
    • Applications :
    • Useful in educational institutions and industrial applications, can used in Audio / Tape recorders servicing Lab experiments.

5KVA SERVO STABILISER

SPECIFICATIONS:
  • Wave Forms : Sine, Square Output.
  • Frequency Range : 2 Hz to 200KHz for all functions in 5 decade.
  • Accuracy : Within ±2% in first 5 ranges & ±4% last range
  • Output Amplitude : Standard 0 – 20Vpp with adjustable
  • Output Impendence : 600 ohms (+5%) option: 50Ω.
    • Square Wave :
  • Rise time :100ns.
  • Fall time :60ns.
  • Duty Cycle :49% to 51%
  • Fall Time :50ns
    • Applications :
    • Useful in educational institutions and industrial applications, can used in Audio / Tape recorders servicing Lab experiments.
      • .

DIGITAL CLAMP METER

SPECIFICATIONS:
  • Wave Forms : Sine, Square Output.
  • Frequency Range : 2 Hz to 200KHz for all functions in 5 decade.
  • Accuracy : Within ±2% in first 5 ranges & ±4% last range
  • Output Amplitude : Standard 0 – 20Vpp with adjustable
  • Output Impendence : 600 ohms (+5%) option: 50Ω.
    • Square Wave :
  • Rise time :100ns.
  • Fall time :60ns.
  • Duty Cycle :49% to 51%
  • Fall Time :50ns
    • Applications :
    • Useful in educational institutions and industrial applications, can used in Audio / Tape recorders servicing Lab experiments.
      • .

DIGITAL TECHO METER

SPECIFICATIONS:
  • Wave Forms : Sine, Square Output.
  • Frequency Range : 2 Hz to 200KHz for all functions in 5 decade.
  • Accuracy : Within ±2% in first 5 ranges & ±4% last range
  • Output Amplitude : Standard 0 – 20Vpp with adjustable
  • Output Impendence : 600 ohms (+5%) option: 50Ω.
    • Square Wave :
  • Rise time :100ns.
  • Fall time :60ns.
  • Duty Cycle :49% to 51%
  • Fall Time :50ns
    • Applications :
    • Useful in educational institutions and industrial applications, can used in Audio / Tape recorders servicing Lab experiments.
      • .

EXCITATION UNIT-SMALL

SPECIFICATIONS:
  • Wave Forms : Sine, Square Output.
  • Frequency Range : 2 Hz to 200KHz for all functions in 5 decade.
  • Accuracy : Within ±2% in first 5 ranges & ±4% last range
  • Output Amplitude : Standard 0 – 20Vpp with adjustable
  • Output Impendence : 600 ohms (+5%) option: 50Ω.
    • Square Wave :
  • Rise time :100ns.
  • Fall time :60ns.
  • Duty Cycle :49% to 51%
  • Fall Time :50ns
    • Applications :
    • Useful in educational institutions and industrial applications, can used in Audio / Tape recorders servicing Lab experiments.
      • .
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