SA501
The Tektronix SA501 is a signature analyzer plug-in for the TM500 system.
It is also known as the 067-1090-00.
It requires a P6405 probe for the data input, and a P6458 4-channel probe for control inputs (clock, start, stop, qualifier). The P6458 can be substituted by the similar, more common P6451 8+1 channel probe without increase in functionality.
Key Specifications
| Data Input | 1 MΩ to ground or 50 kΩ to 1.4 V, switchable; 14 pF; max. 40 V DC+peak AC |
|---|---|
| Threshold | fixed TTL internal, or variable ±12 V |
| Data rate | 40 MHz max.; 15 ns setup time, 0 ns hold time |
| CRC polynomial | x16+x12+x9+x7+1 |
| Display | 4-digit modified hexadecimal (0-9,A,C,F,H,P,U) |
Links
Documents Referencing SA501
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Patents that may apply to SA501
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 3976864A | Apparatus and method for testing digital circuits | Gary B. Gordon • George A. Haag • Jan R. Hofland • Daniel I. Kolody | 1974-09-03 | 1976-08-24 | Signature analysis • 308 • SA501 |
Internals
The SA501 is implemented in standard ECL and TTL logic without a microprocessor. A linear feed back shift register accumulates the CRC. The display is multiplexed, with an IM5610 32×8 PROM used as a 7-segment decoder.
It contains a switch-mode converter fed off the +33.5 V supply to create the internal +5 V rail.
The manual includes signatures for troubleshooting a SA501 with another signature analyzer.
Pictures
067-1090-00
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Note that the P6407 probe shown connected to the SA501 here is not compatible and can be damaged when the SA501 is powered.
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SA 501
Components
Some Parts Used in the SA501
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| IM5610 | Monolithic integrated circuit | 32×8 (256 bit) PROM | 7912AD • MicroLab I • SA501 |