475: Difference between revisions

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* [http://w140.com/tek_475a_schematics.pdf  Tektronix 475A Schematics (PDF)]
* [http://w140.com/tek_475a_schematics.pdf  Tektronix 475A Schematics (PDF)]
* [http://w140.com/tek_475a_description.pdf Tektronix 475A Marketing Sales Release (PDF)]
* [http://w140.com/tek_475a_description.pdf Tektronix 475A Marketing Sales Release (PDF)]
* [[Media:475 calibration manual (Army).pdf|475 calibration (Army)]]
* [[Media:TB-9-6625-2240-35.pdf|475 calibration (Army)]]
''475A [[list of manuals that are needed|manual needed]] (no good quality free scan available)''
''475A [[list of manuals that are needed|manual needed]] (no good quality free scan available)''
}}
}}

Revision as of 02:47, 16 June 2018

{{{manufacturer}}} 
Portable 200 MHz dual-trace scope
Tektronix 475

Produced from 1972 to 1983

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 475 is a portable dual-trace oscilloscope with dual time-bases similar to the 465, but with 200 MHz bandwidth and a maximum vertical sensitivity of 2 mV/Div. It is all solid-state except for the CRT. It was introduced in November 1972.

A revised version, the 475A, has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div. The 1106 is a battery pack for the 475.

The optional DM44 multimeter attaches to the top of the instrument.

Key Specifications

Bandwidth 200 MHz (475), AC cutoff 10 Hz, switchable BW limit 20 MHz
Rise time 1.75  ns (475)
Deflection 2 mV/Div to 5 V/Div, 1-2-5
Cascaded mode 400 μV/Div, 50 MHz with CH1 input connected to CH2 VERT SIG OUT
Time base 10 ns/Div to 500 ms/Div, 1-2-5, and ×10 magnifier
Input impedance 1 MΩ // 20 pF
Triggering 0.3 Div (int) or 50 mV (ext) to 40 MHz, increasing to 1.5 Div/250 mV at 200 MHz; AC coupling >60 Hz; LF REJ >50 kHz, HF REJ <50 kHz
X bandwidth 3 MHz
Z axis input 5 Vp-p, 50 MHz
Calibrator 1 kHz, 30 mA / 300 mV square wave
Outputs CH2 Vert Signal Out, 20 mV/Div into 1 MΩ or 10 mV/Div into 50 Ω; A and B +GATE OUT, +5 V; Probe power jack
CRT 8 × 10 cm², P31 phosphor (P11 opt.)
Power 110, 115, 120, 220, 230 or 240  VAC ±10%, 48-440 Hz, max. 100 W

Internals

The 475 uses a number of Tek-made integrated circuits, including the 155-0032-01 input preamplifier, 155-0085-00 input amplifier, 155-0078-00 vertical amplifier, 155-0091-00 channel switch, 155-0082-00 vertical output amplifier, and 155-0049-00 sweep control.

Links

Pictures