7633

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100 MHz multi-mode storage mainframe Tektronix 7633 with 7A13, 7A15A, 7B53A Produced from 1974 to 1990 Manuals Tektronix 7633 Manual (118MB file, complete, PDF) Tektronix 7633 Manual (41MB file, mostly complete, PDF) Modifications 7xx3 pushbutton illumination mod 050-0912-11 (1987): CRT replacement (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 7633 is a 100 MHz, multi-mode storage mainframe that accepts two 7000-series vertical plug-ins and one 7000-series horizontal plug-in. There is also a rack-mount version, the R7633.

The 7633 is essentially a 7623 with a reduced-scan mode added to boost stored writing speeds.

After the 7633 and 7934 were discontinued in 1990, the 7623B (which added the reduced-scan mode to the 7623 and therefore had essentially the same specs and features as the 7633) was the last analog storage scope model in the 7000 series, available until the entire 7000 family was discontinued in 1992.

Key Specifications

Bandwidth

100 MHz

Fastest cal. sweep

5 ns/Div

Display modes

store, non-store, save

Storage modes

fast variable-persistence, variable-persistence, fast bistable, bistable

Scan modes

normal scan, reduced-scan mode for increased writing speed

Stored writing speed

Mode	Reduced Scan	Full Scan
fast var persist	2222 Div/μs	150 Div/μs
fast bistable	400 Div/μs	50 Div/μs
var persist	3 Div/μs	0.5 Div/μs
bistable	0.2 Div/μs	0.03 Div/μs

CRT

8 × 10 divisions @ 0.9 cm, Tek T7630 (154-0721-00) transfer storage tube, P31 phosphor

Acceleration voltage

8.5 kV (10 kV in the reduced scan mode)

Features

digital readout
calibrator, 1 kHz square wave, 40 mV, 400 mV and 4 V
camera connector, external Z-axis input

Power.

max. 190 W

Weight

13.6 kg (30 lb)

Internals

The 7633 uses a Transfer storage CRT which includes an internal, fast-responding storage mesh. In fast mode, the time base is inhibited after a sweep, and the transfer cycle is started. Individual sweeps therefore occur in about one-second intervals.

The 7633's power power supply is linear.

Prices

Year	1974	1980	1990
Catalog price	$3,650	$5,615	$10,500
2015 value	$17,380	$15,990	$18,860

Links

Tek 7633 page @ amplifier.cd (with repair report)
Tek 7633 page @ barrytech.com
A 1000 cm/µs Storage Oscilloscope. Tekscope Vol 6 Number 2, Mar/Apr 1974 (PDF, 15M) or @ radiomuseum.org

Pictures

Rackmount 7633 with two 7S11 and a 7T11 displaying 2GHz sinewave
reduced scan mode