DC508: Difference between revisions
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DC508-Prescaler.jpg | Prescaler board | DC508-Prescaler.jpg | Prescaler board | ||
Tek sw503 dc502 sg504 dc508a mr501 tm515.png|DC508A in [[TM515]] with other TM500 gear | Tek sw503 dc502 sg504 dc508a mr501 tm515.png|DC508A in [[TM515]] with other TM500 gear | ||
Tek dc508 prescaler.png|DC508 prescaler board schematic | |||
</gallery> | </gallery> | ||
Revision as of 10:46, 23 July 2020
The Tektronix DC508 is a 1 GHz counter plug-in for the TM500 system.
The DC508A version (1980) extended the frequency range to 1.3 GHz.
Both the DC508 and the DC508A use off-the-shelf divide-by-4 counter ICs as the prescaler. The DC508 uses a Motorola MC1697 (Tek part number 156-0923-00), which is rated to 1 GHz. The DC508A uses a Plessey SP8611B (Tek part number 156-1302-01), which is rated to 1.5 GHz.
Specifications
- 1 GHz, 9 digits
- 0-100 MHz direct (15 mVRMS, 1 MΩ // 25 pF), gate times 1 ms to 10 s in decade steps
- 100 MHz+ via prescaler (20 mVRMS, 50 Ω input, fused), gate times 8 ms to 8 s in decade steps
- Functions: Frequency, events
Links
Pictures
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Prescaler board
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DC508A in TM515 with other TM500 gear
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DC508 prescaler board schematic
