35MHz Standard Oscilloscope HM303

Ref. 4472

Specifications

Vertical Deflection
Operating modes: Channel I or II separate, both Channels (alternated or chopped), (Chopper frequency approx. 0.5MHz)
Sum or Difference: from Channel I and Ch. II, (CH II invertable) XY-Mode: via CH I and CH II
Frequency range: 2xDC to 35MHz (-3dB)
Risetime: <10ns Overshoot: £1%
Deflection coefficients: 12 calibrated steps from 5mV/div. to 20V/div. (1-2-5 sequence) with variable 2.5:1 up to 50V/div.
Accuracy in calibrated position: ±3%
Y-expansion x5: (calibrated) to 1mV/div. (±5%) in the frequency range from DC - 10MHz (–3dB)
Input impedance: 1MW II 20pF
Input coupling: DC-AC-GD (ground)
Input voltage: max. 400V (DC + peak AC)

Triggering
Automatic: (peak to peak) £20Hz-100MHz (£ 0.5div.) Normal with level control: DC-100MHz (£0.5div.)
ALT. Triggering; LED indicator for trigger action
Slope: positive or negative
Sources: Channel I or II, CH I alternating CH II, line, external
Coupling:AC (10Hz to 100MHz),DC (0 to 100MHz) LF (0 to 1.5kHz) TV-Sync-Separator: aktive (pos. and neg.) External: 0.3p-p from 30Hz to 50MHz

Horizontal Deflection
Time coefficients: 20 calibrated steps from 0.2s/div. - 0.1μs/div. in 1-2-5 sequence
Accuracy in calibrated position: ±3%.
Min. speed incl. variable: 2.5:1 up to 0.5s/div. X-Mag. x10: ±5%; 10ns/div.: ±8%
Holdoff time: variable to approx. 10:1
Bandwidth X-amplifier: 0-2.5MHz (-3dB).
Input X-Amplifier: via Channel I
(sensitivity see Channel I specification)
X-Y phase shift: <3° below 100kHz.

Component Tester
Test voltage: approx. 7Vrms (open circuit)
Test current: approx. 7mArms (shorted)
Test frequency: approx. 50Hz
Test connection: 2 banana jacks 4mm
One test lead is grounded (Safety Earth)

General Information
CRT: D14-364GY/123 or ER151-GH/-, rectangular screen: (8x10cm) internal graticule
Acceleration voltage: approx 2000V
Trace rotation: adjustable on front panel
Calibrator: square-wave generator (tr <4ns) »1kHz / 1MHz; Output: 0.2V ±1% and 2V
Line voltage: 100-240V AC ±10%, 50/60Hz
Power consumption: approx. 36 Watt at 50Hz.
Min./Max. ambient temperature: 0°C...+40°C
Protective system: Safety class I (IEC 1010-1)
Weight: approx. 5.6kg, color: techno-brown
Cabinet: W 285, H 125, D 380 mm
Lockable tilt handle 4/98
Accessories supplied: Line cord, Operators Manual, 2 Probes 1:1 /10:1

    The HAMEG HM303 oscilloscope succeeds the HM203 (over 180,000 sold worldwide). The bandwidth has been extended from 20 to 35MHz, the sweep rate increased to 10ns/div. and improvements added to the already legendary HAMEG auto triggering system. The HM303 is the ideal instrument for waveform display in the DC to 100MHz frequency range. A key feature of this oscilloscope is the vertical amplifier's pulse fidelity, limiting overshoot to only 1%. The HM303 offers a special fast rise time 1kHz/1MHz Calibrator, permitting high quality probe compensation across the entire frequency range to ensure probe-tip thru to display integrity.

    The HM303 is capable of triggering on input waveforms over 100MHz and on signal levels as small as 0.5 division. Alternate triggering mode enables the display of two asynchronous signals simultaneously. An active Video Sync-Separator permits detailed examination of complex TV signal inputs. A well proven, built-in component tester is now equipped with a stabilized measuring voltage. The use of a switching type of power supply minimizes both weight and power consumption and universally accepts a wide range of input power line voltages, without the requirement to change jumpers or switch positions. The HM303's CRT is fully mu-metal shielded against outside magnetic fields. HAMEG is setting new price/performance breakthroughs with the introduction of this fine oscilloscope. This performance packed scope will tempt all users to run it through its paces.