7B90P
The Tektronix 7B90P is a digitally programmable 400 MHz time-base plug-in for the digitizing mainframes of the 7000 series.
Except for the sweep calibration screwdriver adjustment and the external trigger input terminator switch all other controls are programmable.
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 |
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| 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 |
| Trigger Sensitivity 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 |
| Ext. Trigger 50 Ω | Max. 1 W |
| Sweep/Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep |
Internals
The 7B90P is controlled by a Motorola 6800 microprocessor.
Pictures
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Front
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Front
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Right
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Right
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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
