7B90P

Manuals – Specifications – Links – Pictures

The Tektronix 7B90P is a digitally programmable 400 MHz time-base plug-in for the digitizing mainframes of the 7000 series. All controls are programmable except for the sweep calibration screwdriver adjustment and the external trigger input terminator switch. The local/remote state of the 7B90P is slaved to the local/remote state of the mainframe.

Key Specifications

Sweep	10 ns/Div to 500 ms/Div (1–2–5), ×10 magnifier (down to 500 ps/Div), no variable sweep, adjustable and programmable holdoff
Excluded sweep	First 10 ns in 79XX programmable mainframes
Trigger Sensitivity	PP Auto Mode AC or DC: 125 mV or 0.5 Div up to 50 MHz, 375 mV or 1.5 Div up to 400 MHz Norm or Single Sweep AC: 100 mV or 0.3 Div up to 50 MHz, 250 mV or 1.5 Div up to 400 MHz
Jitter	<100 ps at 400 MHz
Ext. Trigger	1 MΩ: 20 pF, max. 250 V DC+peak AC; 50 Ω: max. 1 W
Sweep/Trigger Modes	Peak-Peak Auto, Auto, Norm, Single Sweep

Links

Documents referencing 7B90P

Document	Class	Title	Authors	Year	Links
Tekniques vol.2 no.7.pdf	Article	The 4051/7912AD: An Automatic Waveform Acquisition System	Jim Kassebaum • Jim Kimball	1978	7912AD • 4051 • GPIB • 7A16P • 7B90P
Tekscope 1979 V11 N1.pdf	Article	An Intelligent, Programmable Transient Digitizer	Dale Aufrecht	1979	7912AD • 7A16P • 7B90P

Prices

Year	Catalog price	In 2026 dollars
1980	$1,915	~$7,600
1984	$2,810	~$8,800

Pictures

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  Left

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  A late version of the 7B90P with connectors for the 021-0374-00 GPIB decoder

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  Connectors for the 021-0374-00 GPIB decoder on a late 7B90P

Components

Some Parts Used in the 7B90P