DC508: Difference between revisions
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{{TM500 | mfg=Tektronix | type=DC508 | function=1 GHz counter | class=counter | image= | {{TM500 | mfg=Tektronix | type=DC508 | function=1 GHz counter | class=counter | image=Tek dc508 front.jpg | introduced=1978 | discontinued=1980 | designers= |manuals= | ||
* [ | * [[Media:070-2460-00.pdf|DC508 Manual]] (OCR) | ||
}} | |||
The [[DC508A]] version (1980) extended the frequency range to 1.3 GHz. | |||
{{BeginSpecs}} | |||
{{Spec | Frequency Range | 0–100 MHz direct (15 mV<sub>RMS</sub>, 1 MΩ // 25 pF), gate times 1 ms to 10 s in decade steps; 100 MHz – 1 GHz via prescaler (20 mV<sub>RMS</sub>, 50 Ω input, fused), gate times 8 ms to 8 s in decade steps }} | |||
{{Spec | Resolution | 9 digits }} | |||
{{Spec | Functions | Frequency, events }} | |||
{{EndSpecs}} | |||
== | ===Options=== | ||
* 1 | * Option 1 − High accuracy time base | ||
* | * Option 7 − Accepts rear panel control signals from a [[TR502]] or [[SW503]] to measure a marker frequency. Resolution and gating remote control circuitry is added to the DC508(A). Requires a [[TM503|TM503 - option 7]] or an appropriately modified mainframe. This option inherently also adds option 1. | ||
==Links== | ==Links== | ||
* [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_500/DC508.htm Tek DC508 page @ amplifier.cd] | |||
* [ | {{Documents|Link=DC508}} | ||
{{PatentLinks|DC508}} | |||
==Internals== | |||
The DC508 uses an off-the-shelf divide-by-4 counter ICs as the prescaler, a [[Motorola MC1697]] (Tek part number 156-0923-00), which is rated to 1 GHz. | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek dc508 front.jpg | Tek dc508 front.jpg | ||
Tek dc508 1ghz.jpg | Tek dc508 1ghz.jpg | ||
DC508-Prescaler.jpg | Prescaler board | |||
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> | ||
==Components== | |||
{{Parts|DC508}} |
Latest revision as of 05:15, 6 October 2024
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.
Key Specifications
Frequency Range | 0–100 MHz direct (15 mVRMS, 1 MΩ // 25 pF), gate times 1 ms to 10 s in decade steps; 100 MHz – 1 GHz via prescaler (20 mVRMS, 50 Ω input, fused), gate times 8 ms to 8 s in decade steps |
---|---|
Resolution | 9 digits |
Functions | Frequency, events |
Options
- Option 1 − High accuracy time base
- Option 7 − Accepts rear panel control signals from a TR502 or SW503 to measure a marker frequency. Resolution and gating remote control circuitry is added to the DC508(A). Requires a TM503 - option 7 or an appropriately modified mainframe. This option inherently also adds option 1.
Links
Documents Referencing DC508
Document | Class | Title | Authors | Year | Links |
---|---|---|---|---|---|
Tekscope 1978 V10 N3.pdf | Article | New Products | 1978 | SC503 • DC508 • 634 | |
070-2088-04.pdf | Book | TM500 Series Rear Interface Data Book | 1985 | AA501 • AF501 • AM501 • AM502 • AM503 • AM511 • DC501 • DC502 • DC503 • DC503A • DC504 • DC505 • DC505A • DC508 • DC508A • DC509 • DC510 • DC5009 • DC5010 • DD501 • DL502 • DM501 • DM501A • DM502 • DM502A • DM505 • DM5010 • FG501 • FG501A • FG502 • FG503 • FG504 • FG507 • FG5010 • LA501 • LA501W • WR501 • MR501 • PG501 • PG502 • PG505 • PG506 • PG507 • PG508 • PS501 • PS502 • PS503 • PS503A • PS505 • PS5010 • RG501 • SC501 • SC502 • SC503 • SC504 • SG502 • SG503 • SG504 • SG505 • SW503 • TG501 • TR501 • TR502 • MI5010 • MX5010 • SI5010 |
Internals
The DC508 uses an off-the-shelf divide-by-4 counter ICs as the prescaler, a Motorola MC1697 (Tek part number 156-0923-00), which is rated to 1 GHz.
Pictures
-
-
-
Prescaler board
-
DC508A in TM515 with other TM500 gear
-
DC508 prescaler board schematic
Components
Some Parts Used in the DC508
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
2N4249 | 151-0342-00 | Discrete component | PNP Si low noise amp. | DC501 • DC502 • DC503 • DC503A • DC504 • DC504A • DC505 • DC505A • DC508 • DC508A • DC509 • DC510 |
2N4851 | 151-0504-00 • 151-0504-01 | Discrete component | silicon unijunction transistor | DC501 • DC502 • DC503 • DC503A • DC504 • DC505 • DC505A • DC508 • DC508A • LA501 • R1330 • 212 • 214 • 4002A • 4623 • 4631 • 4632 • 4633A • 4634 • 4701 • 4701R • 670-0696-01 • 670-1274-00 • 670-1981-00 • 670-1981-01 • 7D01 • 7D12 • 7L12 |
2N5060 | 151-0503-00 | Discrete component | 30 V, 0.8 A thyristor (SCR) | CG551AP • C50 • C51 • C52 • C53 • C70 • DC505 • DC505A • DC508 • DC508A • 1240 • 1241 • 212 • 213 • 214 • 4014 • 4015 • 4025 • 4027 • 4105 • 4106 • 4107 • 4109 • 4111 • 450 • 4623 • 4631 • 4632 • 4633A • 485 • 5D10 • 5223 • 7D10 • 7D11 • 7L12 • 7L13 • 7L14 • 7L18 • 7912AD • 91HS8 |
Motorola MC1697 | 156-0923-00 | Monolithic integrated circuit | 1 GHz divide-by-4 prescaler | DC508 |