SC504: Difference between revisions

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{{TM500 | mfg=Tektronix | type=SC504 | function=80 MHz dual-channel oscilloscope | class=oscilloscope  | image=Tek_sc504_3.jpg | introduced=1978 | discontinued=1993 |
{{TM500 | mfg=Tektronix | type=SC504 | function=80 MHz dual-channel oscilloscope | class=oscilloscope  | image=Tek_sc504_3.jpg | introduced=1978 | discontinued=1993 | an=an |
manuals=
designers= |manuals=
* [http://w140.com/tek_sc504.pdf Tektronix SC504 Manual (PDF)]
* [[Media:070-2296-00.pdf|Tektronix SC504 Manual]]
* [[Media:TB-9-6625-2173-35.pdf|US Army Calbration Guide for SC501, SC502, and SC504]]
* [[Media:TM-9-6695-246-34P.pdf|TM-9-6695-246-34P Parts List]]
* [[Media:TM-9-6695-246-34P.pdf|TM-9-6695-246-34P Parts List]]
* [[Media:ServiceTekNotes_39_May_1985.pdf|ServiceTekNotes #39]]
}}
}}
{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Bandwidth | 80 MHz (derated to 70 MHz from 35 °C to 50 °C ambient), 10 Hz AC coupling cutoff }}
{{Spec | Bandwidth | 80 MHz (derated to 70 MHz from 35 °C to 50 °C ambient), 10 Hz AC coupling cutoff }}
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{{Spec | Input impedance | 1 MΩ // 20 pF }}
{{Spec | Input impedance | 1 MΩ // 20 pF }}
{{Spec | Ext Trig Input | 1 MΩ // 24 pF (750 kΩ // 28 pF when not selected), max. 250 V DC+peak AC) }}
{{Spec | Ext Trig Input | 1 MΩ // 24 pF (750 kΩ // 28 pF when not selected), max. 250 V DC+peak AC) }}
{{Spec | CRT | 8×10 divisions of 6.35 mm (0.25") each; 12 kV acceleration, P31 phoshor; [[154-0730-05]] tube }}
{{Spec | CRT | 8×10 divisions of 6.35 mm (0.25") each; 12 kV acceleration (+10/–2), P31 phosphor; tubes [[154-0730-05]], [[154-0859-00]], later models (~1984+) [[154-0859-01]] with circuit changes }}
{{Spec | Calibrator | 0.6 V<sub>p-p</sub> @ 1 kHz }}
{{Spec | Calibrator | 0.6 V<sub>p-p</sub> @ 1 kHz }}
{{Spec | Power | approx. 26 W operating, <1 W in standby }}
{{Spec | Power | approx. 26 W operating, <1 W in standby }}
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==Links==
==Links==
* [http://k6jca.blogspot.com/2017/12/repair-log-tektronix-sc-504-oscilloscope.html Repair Log: Tektronix SC-504 Oscilloscope] (K6JCA)
* [http://k6jca.blogspot.com/2017/12/repair-log-tektronix-sc-504-oscilloscope.html Repair Log: Tektronix SC-504 Oscilloscope] (K6JCA)
* [http://www.barrytech.com/tektronix/tektm500/teksc504.html SC504 @ barrytech.com]
{{Documents|Link=SC504}}
{{PatentLinks|SC504}}


==Rear interface==
==Rear interface==
The SC504 has dedicated rear interface signal inputs switchable from the front panel AC/DC/GND/Int DC coupling selectors.  These are terminated in 50 Ω (max.5 V<sub>RMS</sub>, 0.5 W).
The SC504 has dedicated rear interface signal inputs switchable from the front panel AC/DC/GND/Int DC coupling selectors.  These are terminated in 50 Ω (max. 5 V<sub>RMS</sub>, 0.5 W).


Additionally, it provides a trigger input, Z-axis input (±5 V), delayed gate input (ECL), gate select input (ground for ext gate), intensify input (ECL), Ch1 trigger output (>50 mV/Div, 30 MHz), triggered gate output (ECL), holdoff output (ECL), ramp output (0−10 V), sweep reset input, ready light output, and +5 V.
Additionally, it provides a trigger input, Z-axis input (±5 V), delayed gate input (ECL), gate select input (ground for ext gate), intensify input (ECL), Ch1 trigger output (>50 mV/Div, 30 MHz), triggered gate output (ECL), holdoff output (ECL), ramp output (0−10 V), sweep reset input, ready light output, and +5 V.
<gallery>
SC504 rear interface.png | click to enlarge
</gallery>


==Internals==
==Internals==
A slide switch under the right side cover allows the variable sweep control to be used as a variable holdoff control instead.
The SC504 uses some custom Tek ICs, namely the [[155-0124-00]] preamplifier (U4345), [[155-0109-01]] trigger (U3238), and [[155-0122-00]] A-B logic (U3158). There are two passive input attenuator hybrids (HY1520, HY1420) and two [[155-0161-00]] attenuator/amplifier hybrids (HY1530, HY1430).   
The SC504 uses some custom Tek ICs, namely the [[155-0124-00]] preamplifier (U4345), [[155-0109-01]] trigger (U3238), and [[155-0122-00]] A-B logic (U3158). There are two passive input attenuator hybrids (HY1520, HY1420) and two [[155-0161-00]] attenuator/amplifier hybrids (HY1530, HY1430).   


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Tek sc504 front.JPG      | in operation
Tek sc504 front.JPG      | in operation
Tek sc504 and SAFT.jpg  | SC504 with non-Tek plug-ins
Tek sc504 and SAFT.jpg  | SC504 with non-Tek plug-ins
Tek sc504 with fg501.jpg | SC504 with [[FG501]] in [[TM503]]
Tek sc504 with fg501.jpg | SC504 with [[FG501]]
Tek-sc504-am503.jpg      | SC504 with [[AM503]] in [[TM503]]
Tek-sc504-am503.jpg      | SC504 with [[AM503]] in [[TM503]]
</gallery>
</gallery>
==Components==
{{Parts|SC504}}

Latest revision as of 04:40, 31 October 2024

Tektronix SC504
80 MHz dual-channel oscilloscope
Tektronix SC504

Produced from 1978 to 1993

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix SC504 is an 80 MHz dual-channel oscilloscope plug-in for the TM500 system.

Key Specifications

Bandwidth 80 MHz (derated to 70 MHz from 35 °C to 50 °C ambient), 10 Hz AC coupling cutoff
Rise time 4.4 ns (derated to 5.0 ns from 35 °C to 50 °C ambient)
Deflection 5 mV/Div to 10 V/Div, 1−2−5, and ×2.5 variable; max. input 250 V (DC coupled), 400 V (AC)
Sweep 50 ns/Div to 200 ms/Div, 1−2−5; variable ×2.5 (to at least 0.5 s/Div); ×10 magnifier
Trigger 0.4 div or 60 mV, DC to 30 MHz; 1.5 div or 150 mV, 30 MHz to 80 MHz; AC coupling >50 Hz; AC LF REJ >10 kHz; HF REJ <50 kHz
Input impedance 1 MΩ // 20 pF
Ext Trig Input 1 MΩ // 24 pF (750 kΩ // 28 pF when not selected), max. 250 V DC+peak AC)
CRT 8×10 divisions of 6.35 mm (0.25") each; 12 kV acceleration (+10/–2), P31 phosphor; tubes 154-0730-05, 154-0859-00, later models (~1984+) 154-0859-01 with circuit changes
Calibrator 0.6 Vp-p @ 1 kHz
Power approx. 26 W operating, <1 W in standby
Features 1-or 2-channel (chop/alt), Add (1+2), Subtract (1-2), X-Y mode (2 MHz, <3° to 50 kHz), single sweep

Links

Documents Referencing SC504

Document Class Title Authors Year Links
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

Patents that may apply to SC504

Page Title Inventors Filing date Grant date Links
Patent US 3562464A Cam actuated switch having movable and fixed contacts on circuit board Howard Vollum • Willem H Verhoef • Tony Sprando 1968-10-07 1971-02-09 Cam switches • 2101 • 2701 • 2703 • 432 • 434 • 465 • 475 • 5A15N • 5A18N • 5A20N • 5A21N • 5A38 • 5A45 • 5B10N • 5B12N • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7B10 • 7B15 • 7B50 • 7B51 • 7B52 • 7B53A • 7B50A • 7B70 • 7B71 • 7B80 • 7B85 • 7B87 • 7B92 • 7B92A • 7D01 • 7D12 • 7D15 • 7J20 • 7S12 • 7T11 • 7T11A • AF501 • AM502 • AM503 • DC502 • DC503 • DC504 • DC505 • DM501 • DM502 • FG501 • FG501A • FG502 • FG503 • FG504 • FG507 • PG501 • PG502 • PG505 • PG506 • PG506A • PG508 • TG501 • SC502 • SC503 • SC504

Rear interface

The SC504 has dedicated rear interface signal inputs switchable from the front panel AC/DC/GND/Int DC coupling selectors. These are terminated in 50 Ω (max. 5 VRMS, 0.5 W).

Additionally, it provides a trigger input, Z-axis input (±5 V), delayed gate input (ECL), gate select input (ground for ext gate), intensify input (ECL), Ch1 trigger output (>50 mV/Div, 30 MHz), triggered gate output (ECL), holdoff output (ECL), ramp output (0−10 V), sweep reset input, ready light output, and +5 V.

  • click to enlarge

    click to enlarge

Internals

A slide switch under the right side cover allows the variable sweep control to be used as a variable holdoff control instead.

The SC504 uses some custom Tek ICs, namely the 155-0124-00 preamplifier (U4345), 155-0109-01 trigger (U3238), and 155-0122-00 A-B logic (U3158). There are two passive input attenuator hybrids (HY1520, HY1420) and two 155-0161-00 attenuator/amplifier hybrids (HY1530, HY1430).

The power supply uses the pass transistors provided by the two mainframe slots that the SC504 covers. Those on the right slot provide ±20 V from the mainframe's ±33.5 V rails, those on the left slot make +5 V from the +11.5 V rail and −5 V from the rectified 17 VAC supply. Power is drawn from the right mainframe slot, the pass transistors are the only connections on the left slot.

Pictures

  • front panel

    front panel

  • in operation (2ch)

    in operation (2ch)

  • in operation

    in operation

  • top

    top

  • right

    right

  • right interior

    right interior

  • left

    left

  • left interior

    left interior

  • bottom

    bottom

  • bottom interior

    bottom interior

  • rear

    rear

  • in operation

    in operation

  • SC504 with non-Tek plug-ins

    SC504 with non-Tek plug-ins

  • SC504 with FG501

    SC504 with FG501

  • SC504 with AM503 in TM503

    SC504 with AM503 in TM503

Components

Some Parts Used in the SC504

Part Part Number(s) Class Description Used in
154-0730-05 154-0730-00 • 154-0730-05 • 154-0730-08 CRT 3" CRT with P31 phosphor and black graticule SC502 • SC504
154-0859-00 154-0859-00 • 154-0859-00 CRT 3" CRT with P31 phosphor and black graticule SC502 • SC504
155-0109-00 155-0109-00 • 155-0109-01 Monolithic integrated circuit trigger 5B25N • 5B31 • 5B40 • 5B42 • 5B44 • 5S14N • 7B50A • 7B53A • 7B80 • 7B85 • 7B87 • 7B81P • 7B90P • 7S14 • 7612D • SC502 • SC503 • SC504
155-0122-00 155-0122-00 Monolithic integrated circuit sweep control 455 • SC503 • SC504
155-0124-00 155-0124-00 Monolithic integrated circuit horizontal preamplifier 455 • SC503 • SC504 • 2221 • 2230 • 2232 • 2336 • 2337
155-0161-00 155-0161-00 Hybrid integrated circuit attenuator and amplifier SC504
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