TDS420A

Tektronix TDS420A

200 MHz 4-ch digital scope

Produced from 1996 to 1999

Manuals

TDS420A

(Manuals are OCRed PDF files unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix TDS420A is a portable, 100 MSamples/s, 200 MHz, quad-channel scope, an update to the earlier TDS420 with higher bandwidth, and a built-in floppy disk.

Key Specifications

Bandwidth	200 MHz (150 MHz @ 2 mV/div, 95 MHz @ 1 mV/div); 20 MHz limit selectable
Sampling rate	100 MS/s
Resolution	8 bits
Memory	30,000 points (opt. 1M: 120,000 points) per channel
Deflection	1 mV/div to 10 V/div, 1−2−5 plus fine control in 1% steps
Inputs	Four identical Tekprobe BNC inputs, 1 MΩ // 15±2 pF; max. 300 V DC + peak AC (derate above 10 kHz) / 50 Ω, max. 5 V_RMS
Timebase	1 ns/div to 20 s/div
Features	Waveform math: Invert waveform, add/subtract/multiply two waveforms Roll Mode / triggered Roll Mode for displaying slower waveform Envelope mode, Average Mode, Hi Res mode (averaging to increase amplitude resolution for slower signals), Peak detect mode GPIB interface VGA output Auxiliary trigger / external clock input Video trigger 3.5" HD (1.44MB) floppy disk, MSDOS format 640×480 display resolution, 5"×3.8", 16 intensity levels Standard probes: P6138A
Options	02: Front cover and pouch 13: RS-232, Parallel printer interfaces 1M: 120,000 points memory 2F: Advanced Math: Integrate/Differentiate/FFT XL: Package of Opt. 02, 13, 1M, 2F C9 camera K212 cart
Power	90-132/180-250 V_AC, 48-440 Hz, ≤240 W/370 VA
Weight	8.6 kg / 19 lbs

Pictures

TDS420A bottom view
TDS420A bottom view
TDS420A bottom view
TDS420A side view
TDS420A top view

Mounting a Gotek USB Floppy Emulator to the TDS420A

This conversion is completely reversible.

Original TDS420A Floppy Drive
Original TDS420A Floppy Drive with mounting kit
Gotek SFR1M44-DU26 Floppy Emulator top view
Gotek SFR1M44-DU26 Floppy Emulator bottom view
Gotek SFR1M44-DU26 Floppy Emulator internals
Floppy Emulator mounted in TDS420A. Note the jumper settings
Floppy Emulator mounted in TDS420A.
Floppy Emulator mounted in TDS420A.

Components

Some Parts Used in the TDS420A

Part	Part Number(s)	Class	Description	Used in
Motorola 68020	156-2515-04	Monolithic integrated circuit	32-bit microprocessor	4224 • 4225 • 4310 • 4315 • 4325 • TDS420 • TDS420A • TDS520 • TDS540 • TDS460 • VM700 • VM700A
TMS9914	156-1444-00 • 156-1444-01 • 156-6223-02	Monolithic integrated circuit	GPIB controller	11301 • 11301A • 11302 • 11302A • 2220 • 2221 • 2224 • 2230 • 2424L • 2430 • 2430A • 2440 • 370 • 370A • 370B • 371 • 371A • 4041 • 4052A • 4054A • 021-0374-00 • 067-1137-99 • AA5001 • AM700 • DA4084 • DC5009 • DC5010 • DM5010 • DM5110 • DM5120 • DM5520 • FG5010 • MI5010 • SG5010 • SG5030 • SI5010 • SI5020 • PS5004 • PS5010 • Keithley 175 • Keithley 175A • Keithley 182 • Keithley 193A • Keithley 195 • Keithley 195A • Keithley 196 • Keithley 197 • Keithley 199 • Keithley 220 • Keithley 224 • Keithley 230 • Keithley 263 • Keithley 485 • Keithley 617 • TDS420 • TDS420A • TDS460 • TDS520