7912HB
The Tektronix 7912HB is a scan converter based digitizer in the 7912 series, introduced in 1988. It is an improved version of the previous 7912AD, increasing bandwidth to 750 MHz (using a 7A29P amplifier).
According to Wizard's Workshop (link at right), pg 48, the bandwidth improvement over the 7912AD is obtained by replacing the vertical amplifier and channel switch with those from the 7904A (which use the udated Hypcon ICs developed for the 7104).
For the 7912AD and 7912HB, special GPIB-controllable plug-in modules with a 'P' (Programmable) suffix were available, e.g. 7A16P, 7A29P and 7B90P.
Key Specifications
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Options
- Option 4: Change to fast digitize mode. This option trades off scan time with resolution by compressing the scan. The target is written on and read from a 256 x 256 point matrix with a maximum of 14 points stored per vertical scan. This option is achieved by setting the correct jumpers on the A16, A20, A22, A26, A46 boards.
- Option 13: Changes the video output to 625 lines/frame with a 50 Hz field rate (PAL). This option is achieved by setting the correct jumpers on the A20 and A28 boards.
Internals
Three output methods are provided: Video (NTSC or PAL), X-Y-Z low-speed analog, and a GPIB interface. For video-out, Tektronix recommended the 634 monitor or a monitor from the 650- and 670-series and a 75 Ω termination. For X-Y-Z analog, Tek recommended a 600-series monitor and no specific termination requirement.
Links
Documents Referencing 7912HB
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| SAND94-0784.pdf | Article | Overview of the Instrument Control and Data Reduction Software in the Sandia Data Acquistion System at the Nevada Test Site | William B. Boyer | 1994 | 7912HB • RTD720 • 7103 |
Patents that may apply to 7912HB
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 3748585A | Silicon diode array scan converter storage tube and method of operation | Robert G. Culter • Raymond Hayes • Emmanuel Sang | 1971-11-15 | 1973-07-24 | 7912 • T7912 • R7912 • 7912AD • 7912HB • Scan converter |
| Patent US 3796910A | Electron beam deflection system | Ed Ritz | 1972-08-04 | 1974-03-12 | 7912 • T7912 • R7912 • 7912AD • 7912HB |
| Patent US 3893036A | Precision function generator | Jim Cavoretto • Al Allworth • Carlo Infante | 1973-07-27 | 1975-07-01 | 7912 • T7912 • R7912 • 7912AD • 7912HB |
See Also
- R7912, 7912AD
- WP2051, WP2052
- MP1101
- SCD1000, SCD5000
- 670-6466-00 7912 AD plug-in interface extender
- 067-0854-00 Calibration Kit
- 067-0679-99 R7912 Demo Unit
Pictures
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7912HB equipped with 7A29P and 7B90P plugins
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7912HB equipped with 7A29P and 7B10 plugins
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7912HB Service manuals
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7912HB vertical amplifier
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7912HB vertical amplifier closeup
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7912HB vertical channel switch
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7912HB vertical channel switch closeup
