7834

Manuals – Specifications – Links – Pictures

The Tektronix 7834 is a 400 MHz multi-mode CRT storage scope that takes two vertical and two horizontal 7000-series plug-ins.

It was the fastest analog-storage scope in the 7000 series, both in terms of bandwidth and writing speed, from its introduction in 1977 until it was superseded by the 500 MHz 7934 in 1987.

Key Specifications

Bandwidth	400 MHz with 7A19, 7A29, 300 MHz with 7A24
Rise time	0.9 ns (with 7A19, 7A29)
Fastest cal. sweep	1 ns/Div
Storage modes	bistable, variable persistence, fast bistable, fast variable persistence
Scan modes	normal scan, reduced-scan mode for increased writing speed
Stored writing speed	Mode Reduced Scan Full Scan fast var persist 5500 Div/μs 300 Div/μs fast bistable 776 Div/μs 50 Div/μs var persist 12 Div/μs 2 Div/μs bistable 0.2 Div/μs 0.03 Div/μs
Storage time	>30 s in variable persistence modes, >30 minutes in bistable modes (typically hours)
CRT	8×10 Div @ 0.9 cm/Div, 154-0745-00 with P31 phosphor; 154-0780-00 in S/N B020000 and up; 10 kV acceleration (12 kV in reduced scan modes)
Calibrator	40 mV/400 mV/4 V into >100 kΩ; 4 mV/40 mV/400 mV into 50 Ω; 1 kHz
Power	90-132 V or 180-250 V, 215 W; Fan, thermal cut-off switch
Weight	17 kg (37.5 lb)

Options

• Option 1: Eliminates the readout system and probe power connectors.
• Option 2: Adds X-Y Delay compensation network.
• Option 3: Adds EMC shielding.

Links

• Tek 7834 @ amplifier.cd
• Tek 7834 @ barrytech.com
• Using the Tek 7834 storage function @ YouTube (Narration in German)

Documents Referencing 7834

Document	Class	Title	Authors	Year	Links
Tekscope 1977 V9 N1.pdf	Article	A Big Step Forward for Direct-View Storage	Jerry Rogers • Ken Hawken	1977	7834
FastTransitionSlowSweep 7D11 7834.pdf	Application Note	Viewing Fast Transitions at Slow Sweep Speeds		1978	7834 • 7D11

Prices

	Year	1977	1980	1984	1986
Mainframe only	Catalog price	$6,900	$8,495	$12,415	$13,365
	In 2023 Dollars	$34,600	$31,400	$36,300	$37,100
Mainframe with 2 × 7A19, 7B85, 7B80	Catalog price	$10,540	$13,645	$20,500	$22,530
	In 2023 Dollars	$52,900	$50,400	$60,000	$62,500

Internals

The 7834 has a switch-mode power supply and a fan (mounted sideways).

Pictures

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  Storage speed graph

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Components

Some Parts Used in the 7834

Custom ICs used in the 7000 series readout system

Page	Model	Part nos	Description	Designers	Used in
155-0014-01	M019D	155-0014-00 • 155-0014-01	analog-to-decimal converter	Barrie Gilbert	7000 series readout system • 7854 • 7934 • 7J20 • 7L5 • P7001
155-0015-01	M020F	155-0015-00 • 155-0015-01	analog data switch	Barrie Gilbert	7000 series readout system • 7854 • 7934
155-0017-00	M025	155-0017-00	5 MHz decade counter	Barrie Gilbert	7000 series readout system • 7854 • 7934
155-0018-00	M026	155-0018-00	zeros logic control	Les Larson	7000 series readout system • 7934
155-0019-00	M027	155-0019-00	decimal point and spacing control	Les Larson	7000 series readout system
155-0020-00	M028	155-0020-00	output assembler	Les Larson	7000 series readout system
155-0021-00	M029C	155-0021-00 • 155-0021-01	timing generator	Les Larson	7000 series readout system • 7854 • 7934
155-0023-00	M160	155-0023-00	character generator (0 1 2 3 4 5 6 7 8 9)	Barrie Gilbert	7000 series readout system
155-0024-00	M161	155-0024-00	character generator (↓ < I / + - + C Δ >)	Barrie Gilbert	7000 series readout system
155-0025-00	M162	155-0025-00	character generator (m μ n p X K M G T R)	Barrie Gilbert	7000 series readout system
155-0026-00	M163	155-0026-00	character generator (S V A W H d B c Ω E)	Barrie Gilbert	7000 series readout system
155-0027-00	M164	155-0027-00	character generator (U N L Z Y P F J Q D)	Barrie Gilbert	7000 series readout system