2440

Manuals – Specifications – Links – Pictures

The Tektronix 2440 is a two-channel 300 MHz, 500 MS/s digital sampling oscilloscope, introduced in 1989.

It uses CCDs (essentially, analog shift registers) to store input samples at high speed, and a single 8 bit flash A/D converter to digitize the time-multiplexed CCD output signals at 4 MS/s.
The 2440M was also introduced in 1989 and offers Control Intermediate Interface Language (CIIL) capability for operation in Modular Automatic Test Equipment (MATE) used in testing military avionics and weapons systems.

WARNING:
Operation of the 2440, 2440M, 2439, 2432, 2432A, 2432M, 2431L, 2430, 2430A, 2430M and 2424L : A/D-converter and CCD hybrids may suffer irreparable damage within a few minutes if operated out of the metal enclosure without extra cooling.

Key Specifications

Bandwidth	300 MHz (Limit: 20, 100, Full); 200 MHz Single event
Rise time	1.2 ns (Repeat on, 16×averaging)
Sampling rate	500 MS/s each channel with simultaneous acquisition; Real time: 100 ns/div and slower, Equivalent time 50 ns/div and faster
Deflection	2 mV/div to 5 V/div in 1-2-5 sequence (200 μV Expanded or Average Mode)
Resolution	8 bit
Record length	1024 samples
Input impedance	1 MΩ // 15 pF or 50 Ω
Sweep speeds	2 ns/div to 5 s/div in 1-2-5 sequence (Modes A, A Intensified and B)
Power	90 to 132 VAC or 180 to 250 VAC, 48 to 440 Hz; 160 W
Features	Autoprobe function with P6137 probe Auto scale factor – On-Screen Readout indicates probe tip deflection factors for 1×, 10×, 100× and 1000× probes 300 MHz X-Y bandwidth at probe tip Automatic measurements – Simultaneously measures up to four parameters on one or more displayed waveforms, updated at 3 Hz intervals, or display a snapshot of 20 parameters of waveform target Acquisition modes: Normal, Envelope (glitch capture), Average Display modes: CH1, CH2, invert, add, multiply, X-Y Cursors: Volts, Time, Volts At Time, 1/Time, Slope Functions: A Mode - Auto Level, Auto/Roll, Normal and Single Seq; B Mode - Trigger After Delay, Runs After Delay, 1K Record Length and more GPIB Interface, printer/plotter output
Options	1R - Configure scope for rack mount 03 - Word Recognizer (P6407) 05 - Video Waveform Measurement System 11 - Two probe-power connectors on the rear panel 22 - Two additional P6137 10× probes w/accessories included For full list of options see Tektronix catalogs (1986 - 1994)

• Standard probes: Two P6137 1 MΩ ×10 passive probes

Accessories

• 2 each P6137 10× probe with accessories
• See 2440/Accessories for further accessories

Links

• Tektronix 2440 internals & repair @ hohlerde.org
• Tektronix 2440 diagnosis and repair from Simon Spiers @ YouTube

Internals

The 2440 employs several processors − an MC68B09 main CPU controls the instrument, a custom 16-bit waveform processor performs signal computations, and an MC6805 microcontroller handles the front panel interface. The GPIB Interface is implemented with a TMS9914 controller.

The power supply consists of a buck-type pre-regulator followed by a push-pull inverter and linear post-regulators (except for the +5 V digital supply rail).

CRT is a 154-0850-01.

Pictures

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Components

Some Parts Used in the 2440