7B80: Difference between revisions
(Designers added from Tekscope v.8 n.1) |
No edit summary |
||
| Line 18: | Line 18: | ||
Option 2 adds support for X-Y mode via a "Display mode" switch (pictured). When X-Y mode is selected, the X-axis signal is taken from the internal trigger path. | Option 2 adds support for X-Y mode via a "Display mode" switch (pictured). When X-Y mode is selected, the X-axis signal is taken from the internal trigger path. | ||
The companion delaying timebase for use in 4-slot mainframes is the [[7B85]]. | The companion delaying timebase for use in 4-slot mainframes is the [[7B85]]. The [[7B50A]] is essentially a 7B80 with its fastest calibrated sweep rate limited to 5 ns/div. | ||
The 7B80 uses the ±50 V supplies from the mainframe. | The 7B80 uses the ±50 V supplies from the mainframe. | ||
Revision as of 01:08, 10 January 2023
The Tektronix 7B80 is a 400 MHz single time base plug-in without delay function for 7000-series scopes, typically the 7800 Series, e.g. 7844. It uses the 155-0126-00 trigger amplifier followed by the 155-0109-01 trigger detector.
Option 2 adds support for X-Y mode via a "Display mode" switch (pictured). When X-Y mode is selected, the X-axis signal is taken from the internal trigger path.
The companion delaying timebase for use in 4-slot mainframes is the 7B85. The 7B50A is essentially a 7B80 with its fastest calibrated sweep rate limited to 5 ns/div.
The 7B80 uses the ±50 V supplies from the mainframe.
Key Specifications
| Sweep | 10 ns/Div to 5 s/Div (1–2–5), ×10 magnifier (down to 1 ns/Div), variable sweep (up to ×2.5) and holdoff (up to ×2 sweep lengths at 20 ms/Div and faster) |
|---|---|
| Excluded sweep | First 10 ns in 78xx, 79xx; First 20 ns in 77xx; First 50 ns in other mainframes |
| Trigger | 50 mV or 0.3 Div up to 50 MHz, 250 mV or 1.5 Div up to 400 MHz; AC >30 Hz, LF REJ >30 kHz, HF REJ <50 kHz |
| Jitter | <100 ps at 400 MHz |
| Ext. Trigger | Max. 250 V DC+peak AC, 1 MΩ // 20 pF |
| Sweep/Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep |
Links
Prices
| Year | 1977 | 1980 | 1984 | 1987 | 1990 |
|---|---|---|---|---|---|
| Catalog price | $745 | $1,000 | $1,485 | $1,660 | $2,080 |
| In 2021 Dollars | $3,400 | $3,400 | $4,000 | $4,000 | $4,400 |
Pictures
-
Front (with Opt.2 X-Y mode switch)
-
7B80 Opt.2, left side
-
7B80 Opt.2, left side, X-Y switch board removed
-
7B80 Opt.2, X-Y switch board, top
-
7B80 Opt.2, X-Y switch board, bottom
-
7B80, right side
-
Right front
-
Right rear
-
Left front
-
Left rear
-
Top
-
Rear
Modifications
The 7B80MODWJ is a 7B80 timebase having various controls removed
-
7B80MODWJ Front view
-
7B80MODWJ Top view
Custom ICs used in the 7B80
| Page | Model | Part nos | Description | Designers | Used in |
|---|---|---|---|---|---|
| 155-0049-00 | M079G | 155-0049-00 • 155-0049-01 • 155-0049-02 | sweep control with lockout | Bill DeVey | 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 | M120B | 155-0109-00 • 155-0109-01 | trigger | Gary Vance | 5B25N • 5B31 • 5B40 • 5B42 • 5B44 • 5S14N • 7B50A • 7B53A • 7B80 • 7B85 • 7B87 • 7B81P • 7B90P • 7S14 • 7612D • SC502 • SC503 • SC504 |
| 155-0126-00 | M121 | 155-0126-00 | trigger source selector and P-P auto amplifier | Art Metz | 7B50A • 7B80 • 7B85 • 7B87 • 7B81P • 7B90P |