7B87

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Tektronix 7B87
400 MHz time base for 7854
Tektronix 7B87 Timebase plug-in

Compatible with 7000-series scopes

Produced from 1981 to 1986

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 7B87 is a 400 MHz time base plugin for 7000-series scopes. It is specifically designed to be used in the "B" Horizontal bay of the 7854 digital scope for which it provides a clock for single-sweep acquisition via interface pin B5, Aux Sweep Gate. Otherwise it is similar to the 7B85. It has no provision for X-Y mode.

When used in a scope other than the 7854, the 7B87 can be used as a delaying timebase even though the delay mode buttons are labeled differently.

Key Specifications

Sweep 5 s/Div to 10 ns/Div in 1-2-5 sequence, ×10 magnifier down to 1 ns/Div, variable to ×2.5
Jitter 0.1 ns or less
Trigger sensitivity 0.3 Div to 50 MHz, 1.5 Div to 400 MHz

Prices

Year 1981 1984 1986
Catalog price $1,400 $1,670 $1,800
In 2023 Dollars $4,700 $4,900 $5,000

Pictures

Components

Some Parts Used in the 7B87

Part Part Number(s) Class Description Used in
155-0049-00 155-0049-00 155-0049-01 155-0049-02 Monolithic integrated circuit sweep control with lockout 335 464 465 466 475 475A 475M 485 5B31 5B40 5B52 5B42 5B44 7B53A 7B80 7B85 7B87 7B92A 7B90P 7B10 7B15 SC502 7B42N AN/USM-281C 067-0657-00
155-0109-00 155-0109-00 155-0109-01 Monolithic integrated circuit trigger 5B25N 5B31 5B40 5B42 5B44 5S14N 7B50A 7B53A 7B80 7B85 7B87 7B81P 7B90P 7S14 7612D SC502 SC503 SC504
155-0126-00 155-0126-00 Monolithic integrated circuit trigger source selector and P-P auto amplifier 7B50A 7B80 7B85 7B87 7B81P 7B90P
155-0185-00 155-0185-00 Monolithic integrated circuit four-digit Counter, latch and D/A converter/DVM 7B15 7B85 7B87