

Technical Specifications
Operating modes
	Channel I, Channel II, Channel I & II Alternate or chopped (approx. 350 KHz), X-Y operation (Ratio 1:1 Input via CH II), Add/ Sub CHI + CHII, Invert CH II.

Vertical deflection (Identical channels)
Bandwidth	: DC-20 MHz(-3dB) DC-28MHz(-6dB)
Risetime	17.5 ns (approx.)

Deflection coefficients
	Micro-controller based 12 calibrated steps 2mV/Div - 10V/Div (1-2-5 sequence). Adjustable by up-down keys. Step position indicated by glowing LEDs

Hold-Off	Variable control for stable Triggering
Input Impedance	1 MW \|\| 30 pF
Input coupling	DC-AC-GND
Maximum Input voltage	400 V (DC + Peak AC)

Timebase
Time coefficients
	18 calibrated steps, 0.5 ms/cm-0.2 s/cm (1-2-5 sequence) with magnifier x 10 to 50 ns/Div, with variable control to 20 ns/Div. Adjustable by up-down keys. Step position indicated by glowing LEDsAccuracy : + 3% (in Cal position)
Ramp output	5 VPP (approx.)


Trigger Bandwidth	40 MHz


Test Voltage	Max 8.6 Vrms (Open)
Test Current	Max 8 mArms (Shorted)
Test Frequency	50Hz, Test circuit grounded to chassis
Continuity Tester	Beeper sounds < 75 W approx



Stabilized Power Supply :
	All operating voltages including the EHT.
Mains voltage	230V ± 10%, 50 Hz. (Switch at back)
Power Consumption	33 VA (approx.)
Weight (approx)	7.5 Kg (approx.)
Dimensions (mm)	W285 - H145 - D380
Operating Temp	0-40O, 90% RH
Finish	Off white with handle cum tilt stand.

Included accessories
1.	Manual 1 No.
2.	BNC-Test Prod 1 No.
3.	BNC - Crocodile Cable 1 No.
4.	Test Prods 1 pair
5.	RS232 Cable 1 No.
6.	PC Control Software 1 CD

30MHz Dual Trace Oscilloscope Model 3706C

30MHz Dual Trace Oscilloscope Model 3706C With Component Tester

DC - 30MHz Bandwidth

1mV/div Sensitivity on Both Channels

Algebraic Addition and Subtraction

X-Y Operation

40ns/div to 0.2s/div Time Base

140mm Rectangular CRT with Internal Graticule

Triggering to 40MHz

Z Modulation

8 x 10 cm. Display

TV Triggering Frame (V) & Line (H)

MAINS Trigger

Variable Hold Off

Built-in Component Tester / Comparator

Technical Specifications

Vertical deflection

Deflection Coefficient (CH1 & CH2)	1mV/div to 20V/div. 5mV/div to 20V/div in 12 calibrated steps in 1-2-5 sequence. x5 Magnification increases the sensitivity to 1mV/div & 2mV/div. (LED indicated).
Accuracy	±3%.
Bandwidth	DC - 30MHz (-3dB), dc coupled.10Hz -30MHz (-3dB), ac coupled.
Rise-Time	11.6 ns or less.
Display Modes	CH1 only, CH1 & CH2 Alternate or Chop mode, Algebraic addition CH1 + CH2, Algebraic subtraction CH1 - CH2, CH2 Invert & X-Y.
Input Impedance	1 M ohms & 25 pF (approx).
Maximum Input Voltage	400 Volts (dc + peak ac).
Internal Trigger Signal	CH1 or CH2 signal.

SM410 30MHz General Purpose Oscilloscope

Scientific SM410 is an economical solution with unsurpassed price performance ratio. An ideal choice in the 30 MHz range.

The new SM410 oscilloscope specifications include 30MHz bandwidth, alternate triggering, 20ns TB speed and X10- magnification for better signal analysis; active TV Sync separator for observing TV signals; Variable hold off for stable triggering of complex wave-forms.

Dual Channel, DC to 30 MHz, 5mV/div., Invert facility in both Channels.

Time Base: 20ns -0.2s/ div; Variable hold- off; X10 Magnification.

Triggering: DC-6OMHz; Active TV Sync Sep.; Alternate triggering.

Additional: Component Tester; 2 Level
Calibrator

Calibrated sweep permits any position of the signal waveform to be expanded for detail analysis, and a two level calibrator for complete check of sensitivities and probe compensation. Inversion facility in both channels with Add buttons measures algebraic sum and difference with respect to any channel.

The entire circuitry is neatly placed on two-glass epoxy PC boards with legend printing of part numbers for easy identification. PCB and Transformer interconnections are through detachable cables. The push button and rotary switches are mounted directly on PCB. The SM410 is now better engineered for quick servicing. All the previous high-grade specifications like 40MHz trigger bandwidth, matched X-Y operation, Z-modulation, line trigger etc. are fully retained. Ergonomically placed controls for ease of operation, upgraded engineering and specifications of the new Scientific SM 410 add to its utility for education and training, measurement and testing, production and service.

100MHz Analog Oscilloscope - HM1004

Features
»	2 Channels, 1mV - 5V/div, Delay Line, 14kV CRT
»	Time Base A: 0.5s - 5ns/div.
»	Time Base B: 20ms - 2ns/div. , 2nd Trigger
»	Triggering DC - 200MHz, Automatic Peak to Peak,
»	Alternate Trigger, Calibrator and Component Tester

Analog Oscilloscope - HM203M

Features:
»	Dual Channel, DC to 30 MHz, 2mV/div., Sweep Delay, Invert facility in Both Channels. · Time Base
»	Time Base : 20ns -0.2s/ div; Variable hold- off;X10 Magnification
»	Triggering : DC-5OMHz; Active TV Sync Sep.; Alternate triggering.
»	Additional : Component and Continuity Tester; 2 Level Calibrator. Overscan Indication.

Model ST 251 Oscilloscope

Features

25 MHz Bandwidth
2Channel - 4 Trace display

Sharp Trace CRT & Auto Focus

Component & Continuity Tester

Stable Triggering upto 50MHz

Trigger sensitivity 0.5 div

Variable Hold off & Line Triggering

Horizontal Amplifier - Bandwidth 2.5 MHz

Maximum Input Voltage : 400 V (DC + Peak

Mains Voltage - 220-240 V 10% 50Hz

Sawtooth output & Z-Modulation

HM203G 30 MHz General Purpose Oscilloscope

Technical Specifications

Operating modes

Channel I, Channel II, Channel I & II Alternate or chopped (approx. 350 KHz), X-Y operation (Ratio 1:1 Input via CH II), Add/ Sub CHI + CHII, Invert CH II.

Vertical deflection (Identical channels)

Bandwidth

DC-25 MHz(-3dB) DC-35 MHz(-6dB)

Risetime

12 ns (approx.)

Deflection coefficients

Micro-controller based 12 calibrated steps 5mV/Div - 20V/Div (1-2-5 sequence). Electronic Control. Display on 32 character backlit Alphanumeric LCD.

Accuracy

+ 3%

Hold-Off

Variable control for stable Triggering

Input Impedance

1 MW || 30 pF

Input coupling

DC-AC-GND

Maximum Input voltage

400 V (DC + Peak AC)

Included accessories
1.	Manual 1 No.
2.	BNC-Test Prod 1 No.
3.	BNC - Crocodile Cable 1 No.
4.	Test Prods 1 pair
5.	RS232 Cable 1 No.
6.	PC Control Software 1 CD
7.	Understanding Oscilloscope 1 CD

HM605 60MHz Universal Oscilloscope

Features

Dual Channel

Max 1mV / div.

Dual Channel

Delay line

Sweep Delay

Time Base: 5ns-2.5s; X10 Magnification

Variable Hold-off

Single shot triggering: DC-100MHz

Alternate triggering, LED indication

Additional: Component Tester; Z mod; Y output

2 level Calibrator

Overscan Indication.

Model ST 221 Oscilloscope

Features

20 MHz Dual Trace Oscilloscope
100 KHz Function Generator
30 MHz Frequency Counter
Stable Triggering up to 40 MHz
Alternate Triggering
Max. sweep speed 40 ns/cm

Internal Graticule CRT
Sine, Square, Triangle, DC Waveform Outputs

Digital Display for Frequency Counter & Function Generator
Economical & Space Saving
Multi-utility Instrument for all labs

Excellent Service Station

Model ST 224 Oscilloscope

Floating Instrument with completely isolated channels

X100 & X10 attenuation
1500 V Input
20 MHz Dual Trace Oscilloscope
Stable Triggering up to 40 MHz
Algebraic sum & difference of both channels
Alternate Triggering & Line Trigger
Variable Hold-Off