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Telequipment D56: Difference between revisions
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|series= | |series= | ||
|model=D56 | |model=D56 | ||
|summary= | |summary=15 MHz 2-ch scope | ||
|image=01_TQD56_Front 20240212.jpg | |image=01_TQD56_Front 20240212.jpg | ||
|caption=Telequipment D56 | |caption=Telequipment D56 | ||
| Line 10: | Line 10: | ||
|designers= | |designers= | ||
|manuals= | |manuals= | ||
* [[Media:]] | * [[Media:Telequipment_D56_manual_ocr.pdf|Telequipment D56 Manual]] | ||
* [[Media:Telequipment d56 description from 1968 catalog.pdf|D56 Description in 1968 Catalog]] | |||
}} | }} | ||
The '''Telequipment D56''' is a | The '''Telequipment D56''' is a 15 MHz dual-channel dual beam oscilloscope produced in the late 1960s. | ||
It uses a mix of tube and solid-state circuitry. | |||
In the absence of a D56 manual, the closest manual is that of the [[Telequipment_D55|D55A]], which is an all-tube scope from 1963. | |||
{{ | {{BeginSpecs}} | ||
{{Spec | Bandwidth | DC to 15 MHz (-3 dB) }} | |||
{{Spec | Rise time | 23 ns }} | |||
{{Spec | Deflection | 10 mV/div to 50 V/div, 1–2–5, and ×10 magnifier }} | |||
{{Spec | Input Impedance | 1 MΩ // 40 pF }} | |||
{{Spec | Sweep Rate | 500 ns/div to 5 s/div, 1–2–5, and ×10 magnifier }} | |||
{{Spec | Features | 10 MHz time calibrator (intensity modulated marker) on CH11 using Timebase A }} | |||
{{Spec | Power | 90 - 240 VAC, 50 Hz, ~275 VA }} | |||
{{Spec | Dimensions | 24 cm × 43 cm × 48 cm }} | |||
{{Spec | Weight | 26.7 kg (59 lb) }} | |||
{{EndSpecs}} | |||
== | ==Internals== | ||
* | ===Differences between D56 and D55A=== | ||
The main differences between D56 and D55A are the following: | |||
* Both have 15 MHz Bandwidth. However, at 10 mV/div sensitivity, the bandwidth is limited to 500 kHz. | |||
* 10 mV/div compared to 100 mV/div Sensitivity. | |||
* Circuit boards are used more consistently apart from the vertical amplifiers. | |||
* Mixed transistors and tubes. Still many tubes, but adding transistors gives more possibilities. | |||
===Tubes=== | |||
* 35 tubes + CRT (same CRT as in the D55A). | |||
* Vertical Amplifiers (each): 2×[[EF184]], 2×[[ECC88]], 2×[[E810F]]. | |||
* Horizontal Amplifiers (each): V101: [[ECF80]], V102 [[ECF80]], V103: [[ECC88]], V104: [[ECC88]], V105: [[EAA91]], V106: [[ECF80]], V107: [[ECF80]], V108: [[ECF80]], V109: [[ECF80]]. | |||
* Time Delay: V302: [[ECC88]], V303: [[ECC88]]. | |||
* Trace Blanking: V304: [[ECC88]], V305: [[ECC88]], V403: [[EF184]]. | |||
* Regulators Board ? PC23: V301: [[ECC88]]. | |||
* Regulators Board PC24: V401: [[EL86]], V402: [[ECF80]]. | |||
* CRT: 5" flat-face, double gun, P1 phosphor. 1374K G.E.C. | |||
===Transistors=== | |||
* Nine germanium PNP transistors. | |||
* Motorola LB293, T-119, TO-92, germanium, PNP: TR251, TR252, A; TR101, TR102, B; TR101, TR102. 6 pcs. total. | |||
* Newmarket NKT452, TO-3, germanium, PNP, 3A. TR402. | |||
* Newmarket ACY22, TO-5, Germanium, PNP. 225mW, TR401, TR403. 2 pcs. | |||
==Pictures== | ==Pictures== | ||
| Line 25: | Line 59: | ||
04_TQD56_Running 20240211.jpg | D56 trace | 04_TQD56_Running 20240211.jpg | D56 trace | ||
05_TQD56_Rear_Cover 20240211.jpg | D56 Rear View | 05_TQD56_Rear_Cover 20240211.jpg | D56 Rear View | ||
07_TQD56_Side_Vertical 20240212.jpg | D56 Vertical Amplifiers Side View | |||
08_TQD56_Vertical_Amplifiers 20240212.jpg | D56 Vertical Amplifiers Side View | |||
09_TQD56_Rear_regulators 20240212.jpg | Rear View with Transformers and Regulators | |||
10_TQD56_Rear_closeup 20240212.jpg | D56 Regulators | |||
11_TQD56_Side_Timebase 20240212.jpg | Timebase Side View | |||
12_TQD56_Timebase_A 20240212.jpg | Timebase A top | |||
13_TQD56_PC27_20240212.jpg | Trace Blanking Board PC27 | |||
15_TQD56_Front_PC26 20240212.jpg | Timing Delay Transistors | |||
16_TQD56_Motorola_T119 20240212.jpg | Trigger? Board Transistors | |||
17_TQD56_Trimmer_A 20240212.jpg | Neutralization Trimmer, do not change | |||
19_TQD56_Vertical 20240212.jpg | Vertical Amplifier Component Side | |||
20_TQD56_PC25 20240212.jpg | Rear Board on Vertical Side | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|Telequipment D56}} | |||
[[Category:Telequipment]] | [[Category:Telequipment]] | ||
[[Category: | [[Category:Tube scopes]] | ||