7B87

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.

Manuals – Specifications – Links – Pictures

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

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  7B87 front

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  Left side

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  Right side

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  7B87 in a 7854

Components