Telequipment D75: Difference between revisions

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{{Oscilloscope Sidebar |
{{Oscilloscope Sidebar  
title=Telequipment D75 |
|manufacturer=Telequipment
summary=50 MHz scope |
|series=Telequipment D63 DM63 D75 D83
image=Telequipment D75.jpg |
|model=D75
caption=Telequipment D75 with [[Telequipment V4|V4]] and [[Telequipment S2 | S2A]] plug-ins  |
|summary=50 MHz scope  
introduced=(?) |
|image=TQ_D75_front_cropped.jpg  
discontinued=(?) |
|caption=Telequipment D75 with [[Telequipment V4|V4]] and [[Telequipment S2 | S2A]] plug-ins   
manuals=
|introduced=1975
''Please add''
|discontinued=(?)  
|designers=
|manuals=
* [[Media:070-1487-00.pdf | D75 Service Manual]]
* [[Media:070-1487-10.pdf | D755 Instruction Manual]]
}}
}}
The '''Telequipment D75''' is a 50 MHz scope. It is a horizontal version of the [[Telequipment D83]] with a smaller CRT.
The '''Telequipment D75''' is a 50 MHz scope. It is a horizontal version of the [[Telequipment D83]] with a smaller CRT. The government version of the D75 is the [[Telequipment D755|D755]].


The D75 takes two plug-ins that are also compatible with D83, [[Telequipment D63|D63]] and [[Telequipment DM63|DM63]].
The D75 takes two plug-ins that are also compatible with [[Telequipment D83|D83]], [[Telequipment D63|D63]] and [[Telequipment DM63|DM63]].
Vertical plugins include the [[Telequipment V4|V4 dual trace amplifiers]], the [[Telequipment V3|V3 single channel differential amplifier]], the [[Telequipment V1|V1 single channel amplifier]], and the [[Telequipment V5|V5 single channel amplifier with delay line]] (primarily intended for the DM63/D63 mainframes that have no built-in delay lines, whereas D75/D83 do). Timebase plugins include the [[Telequipment S1|S1 single timebase]] and [[Telequipment S2|S2 dual timebase]].
Vertical plugins include the [[Telequipment V4|V4 dual trace amplifiers]], the [[Telequipment V3|V3 single channel differential amplifier]], the [[Telequipment V1|V1 single channel amplifier]], and the [[Telequipment V5|V5 single channel amplifier with delay line]] (primarily intended for the DM63/D63 mainframes that have no built-in delay lines, whereas D75/D83 do). Timebase plugins include the [[Telequipment S1|S1 single timebase]] and [[Telequipment S2|S2 dual timebase]]. Calibration fixtures include the [[067-0672-00]] plug-in for the vertical slot and the [[067-0673-00]] plug-in for the horizontal slot.


{{MissingSpecs}}
{{BeginSpecs}}
{{Spec | Bandwidth | DC Coupled DC to 50 MHz (−3 dB) and AC Coupled 2 Hz to 50 MHz (−3 dB) }}
{{Spec | Risetime | 7 ns }}
{{Spec | Deflection | 5 mV/div to 20 V/div in 12 calibrated steps (1−2−5 sequence) }}
{{Spec | Timebase | 2 s/div (B: 1 s/div) ) to 100 ns/div, 1−2−5 }}
{{Spec | Input impedance | 1 MΩ // 29 pF }}
{{Spec | Max. input  | max. 400 V DC + AC peak }}
{{Spec | Trigger modes | A: Auto, DC, AC, HF Reject; B: Auto, AC }}
{{Spec | Trigger Sources | CH1, CH2, Alternate }}
{{Spec | Operating modes | CH1, CH2, CH1/CH2 Alt, Chopped, CH1 and CH2 added, CH2 inverted }}
{{Spec | Sweep modes | A only, A intensified by B, B delayed by A, A and B mixed, delayed B variable or triggered, repetitive or single shot }}
{{Spec | Delay time | 10 μs to 20 s }}
{{Spec | Calibrator  | ~1 kHz, 30 mV and 300 mV, 3 mA, square wave, ±1% voltage and current, ±20% frequency}}
{{Spec | CRT | [[154-0676-10]] tube, P31 [[phosphor]], 15 kV acceleration, 8 cm × 10 cm graticule }}
{{Spec | Power | 100 V − 125 V in 5V steps, 200 V − 250 V in 10 V steps, selected via primary voltage selector, 40 Hz to 400 Hz, 85 VA }}
{{Spec | Dimensions | Height: 136 mm, Width: 380 mm, Depth: 470 mm }}
{{Spec | Weight | 11.4 kg }}
{{Spec | Temperature limits | Operating: +5°C to +40°C, Non-operating: -25°C to +70°C }}
{{EndSpecs}}
 
== D75 Plug-In Variations==
;D75 comprises
: (a) 50MHz Dual-Channel Amplifier - Type V4
: (b) Dual Sweep Unit - Type S2A
;D751 comprises
: (a) Differential Amplifier - Type V3
: (b) Single Sweep Unit - Type S1A
;D752 comprises
: (a) Differential Amplifier - Type V3
: (b) Dual Sweep Unit - Type S2A
;D755 comprises
: (a) 50MHz Dual-Channel Amplifier - Type V4
: (b) Dual Sweep Unit with X-Y facility - Type S2C
 
== Standard Options==
;Option 4: P7 C.R.T. and amber filter fitted in place of P31 C.R.T. and blue filter
;Option 6: Supplied as 115V and fitted with U.S.A. power cord
 
== Special Types==
There was a special version of this oscilloscope for post offices, the ''Post Office Oscilloscope Type 16A''. This version had a build in graticule illumination with a brightness control knob on the back panel behind the ETH transformer.


==Links==
==Links==
Line 20: Line 63:


==Internals==
==Internals==
According to [https://groups.io/g/TekScopes/topic/telequipment_ct71/964022?p=Created,,,20,0,0,0 this posting], the CRT is a  [[154-0676-10|154-0676-10 Tektronix CRT]], the same as in the [[465]].


==Pictures==
==Pictures==
Line 34: Line 78:
Tq d75 10.jpg|Telequipment D75
Tq d75 10.jpg|Telequipment D75
Tq d75 11.jpg|Telequipment D75
Tq d75 11.jpg|Telequipment D75
Telequipment d75 with v4 and s2a 1.jpg|Telequipment D75 with V4 and S2A Plug-ins
Telequipment d75 with v4 and s2a 3.jpg|Telequipment D75 with V4 and S2A Plug-ins
Telequipment d75 with v4 and s2a 2.jpg|Telequipment D75 with V4 and S2A Plug-ins
Telequipment d75 with v4 and s2a 4.jpg|Telequipment D75 with V4 and S2A Plug-ins
Telequipment d75 with v4 and s2a 5.jpg|Telequipment D75 with V4 and S2A Plug-ins
TQ_D75_perspective.jpg|Telequipment D75 with V4 amplifier and S2A dual sweep unit
TQ_D75_front.jpg|Telequipment D75 with V4 amplifier and S2A dual sweep unit (front view)
TQ_D75_back_perspective.jpg|Telequipment D75 with V4 amplifier and S2A dual sweep unit (back view)
TQ_D75_top_closed.jpg|Telequipment D75 with V4 amplifier and S2A dual sweep unit (top view)
TQ_D75_top_open.jpg|Telequipment D75 with V4 amplifier and S2A dual sweep unit (top view without cover)
TQ_D75_bottom_closed.jpg|Telequipment D75 with V4 amplifier and S2A dual sweep unit (bottom view)
TQ_D75_bottom_open.jpg|Telequipment D75 with V4 amplifier and S2A dual sweep unit (bottom view without cover)
</gallery>
</gallery>


[[Category:CRT based solid-state scopes]]
==Components==
{{Parts|Telequipment D75}}
 
 
[[Category:Plugin scopes]]
[[Category:Plugin scopes]]
[[Category:Telequipment]]
[[Category:Telequipment]]
[[Category:CRT based solid-state scopes]]

Latest revision as of 07:49, 21 September 2023

Telequipment D75
50 MHz scope
Telequipment D75 with V4 and S2A plug-ins

Produced from 1975 to (?)

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

The Telequipment D75 is a 50 MHz scope. It is a horizontal version of the Telequipment D83 with a smaller CRT. The government version of the D75 is the D755.

The D75 takes two plug-ins that are also compatible with D83, D63 and DM63. Vertical plugins include the V4 dual trace amplifiers, the V3 single channel differential amplifier, the V1 single channel amplifier, and the V5 single channel amplifier with delay line (primarily intended for the DM63/D63 mainframes that have no built-in delay lines, whereas D75/D83 do). Timebase plugins include the S1 single timebase and S2 dual timebase. Calibration fixtures include the 067-0672-00 plug-in for the vertical slot and the 067-0673-00 plug-in for the horizontal slot.

Key Specifications

Bandwidth DC Coupled DC to 50 MHz (−3 dB) and AC Coupled 2 Hz to 50 MHz (−3 dB)
Risetime 7 ns
Deflection 5 mV/div to 20 V/div in 12 calibrated steps (1−2−5 sequence)
Timebase 2 s/div (B: 1 s/div) ) to 100 ns/div, 1−2−5
Input impedance 1 MΩ // 29 pF
Max. input max. 400 V DC + AC peak
Trigger modes A: Auto, DC, AC, HF Reject; B: Auto, AC
Trigger Sources CH1, CH2, Alternate
Operating modes CH1, CH2, CH1/CH2 Alt, Chopped, CH1 and CH2 added, CH2 inverted
Sweep modes A only, A intensified by B, B delayed by A, A and B mixed, delayed B variable or triggered, repetitive or single shot
Delay time 10 μs to 20 s
Calibrator ~1 kHz, 30 mV and 300 mV, 3 mA, square wave, ±1% voltage and current, ±20% frequency
CRT 154-0676-10 tube, P31 phosphor, 15 kV acceleration, 8 cm × 10 cm graticule
Power 100 V − 125 V in 5V steps, 200 V − 250 V in 10 V steps, selected via primary voltage selector, 40 Hz to 400 Hz, 85 VA
Dimensions Height: 136 mm, Width: 380 mm, Depth: 470 mm
Weight 11.4 kg
Temperature limits Operating: +5°C to +40°C, Non-operating: -25°C to +70°C

D75 Plug-In Variations

D75 comprises
(a) 50MHz Dual-Channel Amplifier - Type V4
(b) Dual Sweep Unit - Type S2A
D751 comprises
(a) Differential Amplifier - Type V3
(b) Single Sweep Unit - Type S1A
D752 comprises
(a) Differential Amplifier - Type V3
(b) Dual Sweep Unit - Type S2A
D755 comprises
(a) 50MHz Dual-Channel Amplifier - Type V4
(b) Dual Sweep Unit with X-Y facility - Type S2C

Standard Options

Option 4
P7 C.R.T. and amber filter fitted in place of P31 C.R.T. and blue filter
Option 6
Supplied as 115V and fitted with U.S.A. power cord

Special Types

There was a special version of this oscilloscope for post offices, the Post Office Oscilloscope Type 16A. This version had a build in graticule illumination with a brightness control knob on the back panel behind the ETH transformer.

Links

Internals

According to this posting, the CRT is a 154-0676-10 Tektronix CRT, the same as in the 465.

Pictures

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75

    Telequipment D75

  • Telequipment D75 with V4 and S2A Plug-ins

    Telequipment D75 with V4 and S2A Plug-ins

  • Telequipment D75 with V4 and S2A Plug-ins

    Telequipment D75 with V4 and S2A Plug-ins

  • Telequipment D75 with V4 and S2A Plug-ins

    Telequipment D75 with V4 and S2A Plug-ins

  • Telequipment D75 with V4 and S2A Plug-ins

    Telequipment D75 with V4 and S2A Plug-ins

  • Telequipment D75 with V4 and S2A Plug-ins

    Telequipment D75 with V4 and S2A Plug-ins

  • Telequipment D75 with V4 amplifier and S2A dual sweep unit

    Telequipment D75 with V4 amplifier and S2A dual sweep unit

  • Telequipment D75 with V4 amplifier and S2A dual sweep unit (front view)

    Telequipment D75 with V4 amplifier and S2A dual sweep unit (front view)

  • Telequipment D75 with V4 amplifier and S2A dual sweep unit (back view)

    Telequipment D75 with V4 amplifier and S2A dual sweep unit (back view)

  • Telequipment D75 with V4 amplifier and S2A dual sweep unit (top view)

    Telequipment D75 with V4 amplifier and S2A dual sweep unit (top view)

  • Telequipment D75 with V4 amplifier and S2A dual sweep unit (top view without cover)

    Telequipment D75 with V4 amplifier and S2A dual sweep unit (top view without cover)

  • Telequipment D75 with V4 amplifier and S2A dual sweep unit (bottom view)

    Telequipment D75 with V4 amplifier and S2A dual sweep unit (bottom view)

  • Telequipment D75 with V4 amplifier and S2A dual sweep unit (bottom view without cover)

    Telequipment D75 with V4 amplifier and S2A dual sweep unit (bottom view without cover)

Components

Some Parts Used in the Telequipment D75

Part Part Number(s) Class Description Used in
154-0731-00 154-0731-00 CRT CRT Telequipment D75 • 455 • 465 • 465B • 468
T4650 154-0676-00 • 154-0676-05 • 154-0676-10 • 154-0676-14 CRT CRT 465 • Telequipment D75 • Telequipment D755
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