DC508: Difference between revisions

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{{TM500 | mfg=Tektronix | type=DC508 | function=1 GHz counter | class=counter | image=Tek dc508 front.jpg | introduced=1978 | discontinued=1983 | manuals=
{{TM500 | mfg=Tektronix | type=DC508 | function=1 GHz counter | class=counter | image=Tek dc508 front.jpg | introduced=1978 | discontinued=1980 | designers= |manuals=
* [[Media:DC508_secured.pdf|Tektronix DC508 Manual (OCR, PDF)]]
* [[Media:070-2460-00.pdf|DC508 Manual]] (OCR)
* [[Media:070-3638-00.pdf|Tektronix DC508A Manual (OCR, PDF)]]
* [[Media:070-3638-00.pdf|DC508A Manual]] (OCR)
}}
}}
 
The '''DC508A''' version (1980) extended the frequency range to 1.3 GHz.
 
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.
Both the DC508 and the DC508A use off-the-shelf divide-by-4 counter ICs as the prescaler.
The DC508 uses a [[Media:Motorola mc1697 datasheet.pdf|Motorola MC1697]] (Tek part number 156-0923-00), which is rated to 1 GHz.
The DC508 uses a [[Motorola MC1697]] (Tek part number 156-0923-00), which is rated to 1 GHz.
The DC508A uses a [[Media:Plessey sp8610 sp8611 datasheet.pdf|Plessey SP8611B]] (Tek part number 156-1302-01), which is rated to 1.5 GHz.
The DC508A uses a [[Plessey SP8611B]] (Tek part number 156-1302-01), which is rated to 1.5 GHz.


==Specifications==
==Specifications==
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* 100 MHz+ via prescaler (20 mV<sub>RMS</sub>, 50 Ω input, fused), gate times 8 ms to 8 s in decade steps
* 100 MHz+ via prescaler (20 mV<sub>RMS</sub>, 50 Ω input, fused), gate times 8 ms to 8 s in decade steps
* Functions: Frequency, events
* 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|TM503 - option 7]] or an appropriately modified mainframe. This option inherently also adds option 1.


==Links==
==Links==
* [http://www.barrytech.com/tektronix/tektm500/tekdc508.html DC508 @ barrytech.com]
* [http://www.barrytech.com/tektronix/tektm500/tekdc508.html DC508 @ barrytech.com]
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_500/DC508.htm Tek DC508 page @ amplifier.cd]
* [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_500/DC508.htm Tek DC508 page @ amplifier.cd]
{{Documents|Link=DC508}}
{{Documents|Link=DC508A}}


==Pictures==
==Pictures==
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Tek dc508 prescaler.png|DC508 prescaler board schematic
Tek dc508 prescaler.png|DC508 prescaler board schematic
</gallery>
</gallery>
==Components==
{{Parts|DC508}}
{{Parts|DC508A}}

Revision as of 05:46, 12 October 2023

Tektronix DC508
1 GHz counter
Tektronix DC508

Produced from 1978 to 1980

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

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

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

Documents Referencing DC508A

Document Class Title Authors Year Links
Tekscope 1980 V12 N4.pdf Article New Products 1980 4634 • TR503 • FG507 • DC508A • 8550 • S-3275
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

Pictures

  • Prescaler board

    Prescaler board

  • DC508A in TM515 with other TM500 gear

    DC508A in TM515 with other TM500 gear

  • DC508 prescaler board schematic

    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


Some Parts Used in the DC508A

Part Part Number(s) Class Description Used in
155-0119-00 155-0119-00 Monolithic integrated circuit 5-digit BCD counter and multiplexer DC508A
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
Plessey SP8611B 156-1302-01 Monolithic integrated circuit 1.3 GHz divide-by-4 prescaler DC508A
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