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The Tektronix 160 series is a modular oscilloscope made from the mid 1950's
{{Oscilloscope Sidebar
(schematics drawn in [[introduced in 1953|1953]]) to the late 1960's (in 1969 catalog).
|manufacturer=Tektronix
A 160 system typically includes a Type 160 power supply, a [[360|Type 360 indicator unit]], and one or more of the 161, [[162]], and [[163]] trigger and sweep modules.  Each module is the size of a small shoe box.  Power connections are made behind the modules using cables that have octal connectors.  The power cables can be connected in a star topology or can be daisy-chained using the loop-through connection on the back of each module. Signal connections are made on the front, typically with banana plugs.  The 160, 161, 162, and 163 use the ceramic strip and silver solder construction style that is prevalent in other Tektronix equipment of the era, such as the 500-series scopes.  The Type 360 indicator unit contains its the CRT power supply and the vertical amplifier and is constructed using a single-sided printed circuit board.
|model=160
|series=160
|summary=Modular Oscilloscope
|image=Tek_160a_360_161_162_trace.jpg
|caption=160A 360 161 162
|introduced=1952
|discontinued=(?)
|designers=
|manuals=
* [[Media:070-220.pdf|Tektronix 160-series Manual]] (PDF)
* [https://w140.com/tek_360_160_irb.pdf Tektronix 160-series Instrument Reference Book (PDF, OCR, 210MB!)]
* [[Media:Tek 160a fcp.pdf|Tektronix 160a Factory Calibration Procedure (PDF, OCR)]]
}}
The '''Tektronix 160 series''' is a modular instrument made from the mid-1950s (schematics drawn in [[introduced in 1953|1953]]) to the late 1960s (in 1969 catalog). The catalog describes them as instruments designed to generate timed pulses of variable amplitude and width for use in nerve stimulation/neurophysical experiments.  


In a typical setup, the input signal is fed through a splitter to the Y-input of the 360 and the trigger input of the 161.  The 161 generates a trigger pulse that controls a 162, which generates the horizontal ramp for the sweep. This ramp signal is sent to the 360 horizontal input.  The signals on the front panel of the 160-series modules are all single-ended.  The 360 has a phase splitter to generate the differential drive for the horizontal deflection plates.
A 160 series system typically includes a Type 160 power supply, a [[360|Type 360 indicator unit]], and one or more of the [[161]], [[162]], and [[163]] trigger and sweep modules.
The 360 uses as standard 3WP 3-inch (7.5cm) round CRT.  The cathode voltage is -1850 volts.  No post-deflection acceleration is used.
There is also a single-unit power supply, the [[126]].


The 160 power supply was produced with serial numbers 101-619.  For serial numbers 620 and up, it is called the 160A.
Each module is the size of a small shoe box.  Power connections are made behind the modules using [[W160|Type W160]] cables that have [[octal connector]]s. 
The power cables can be connected in a star topology (Type 160 in the center) or can be daisy-chained using the loop-through connection on the back of each module.  


Signal connections are made on the front, typically with banana plugs. 


* http://bama.edebris.com/download/tek/160/tek%20160.pdf
In a typical setup, the input signal is fed through a splitter to the Y-input of the 360 and the trigger input of the 161.
* http://tubedata.itchurch.org/sheets/041/3/3WP1.pdf
The 161 generates a trigger pulse that controls a 162, which generates the horizontal ramp for the sweep.
This ramp signal is sent to the 360 horizontal input.


The signals on the front panel of the 160-series modules are all single-ended.
According to the May 1952 issue of Tek Talk (page 6), the 160 Series entered limited production in April of 1952.
* [[Media:Tek_160-1953_Catalog.pdf |160 Description from 1953 catalog (PDF)]]
{{BeginSpecs}}
{{SpecGroup|Type 160 Power Supply}}
{{Spec | +300 V output | DC, unregulated, 170 mA max}}
{{Spec | +225 V output | DC, regulated, 125 mA max }}
{{Spec | +150 V output | DC, regulated, 5 mA max }}
{{Spec | −170 V output | DC, regulated, 125 mA max}}
{{Spec |  6.3 V output | AC, unregulated, 10 A max }}
{{SpecGroup|Type 160A Power Supply}}
{{Spec | +300 V output | DC, unregulated, 250 mA max}}
{{Spec | +225 V output | DC, regulated, 175 mA max }}
{{Spec | +150 V output | DC, regulated, 15 mA max }}
{{Spec |  +70 V output | DC, unregulated ''max load?''}}
{{Spec | −170 V output | DC, regulated, 125 mA max}}
{{Spec |  6.3 V output | AC, unregulated, 20 A max }}
{{EndSpecs}}
==Internals==
The 160, 161, 162, and 163 use the ceramic strip and silver solder construction style that
is prevalent in other Tektronix equipment of the era, such as the 500-series scopes like the [[545]].
The Type 360 indicator unit contains the CRT HV power supply and the vertical amplifier
and is constructed using a single-sided printed circuit board.
The 360 has a phase splitter to generate the differential drive for the horizontal deflection plates.
The 360 uses a standard [[3WP|3WP series 3-inch CRT]]. 
The cathode voltage is −1850 V.  No post-deflection acceleration is used.
The 160 power supply was produced with serial numbers 101-619. 
For serial numbers 620 and up, it is slightly different and is called the 160A. 
The 160 and 160A both use a [[5V4]] rectifier tube for the negative voltage
and two 5V4 tubes in parallel for the positive voltage. 
Both use [[5651]] 87-volt reference tubes. 
The 160 and 160A differ in their output regulator circuits. 
The 160 uses a [[6AS7]] dual-triode tube, one half to regulate the +225 V output
and the other half to regulate the −170 V output.  The 160A uses both halves of a
[[6080]] dual-triode in parallel to regulate the +225 V output,
and two parallel [[12B4]] triodes to regulate the −170 V output.
==Links==
*[https://vintagetek.org/160-series-instruments/ 160@Vintage Tek]
==Pictures ==
<gallery>
<gallery>
Image:Tek 160 schem.png|160 schematic
Tek 160 dn1.jpg|photo courtesy of Dave Nicol
Image:Tek 160a schem.png|160A schematic
Tek 160 dn2.jpg|photo courtesy of Dave Nicol
Tek 160 schem.png|160 schematic
Tek 160a schem.png|160A schematic
Tek 160a 360 161 162 trace.jpg|160 system in operation.
Rack of 160-series modules.jpg
Tek 160 system 1.jpg
Tek 160 system 2.jpg
Tek 160 system 3.jpg
Tek 160 system 4.jpg
Tek 160 system 5.jpg
Tek 160 system 6.jpg
Tek 160 system 7.jpg
Tek_160A_Front.jpeg | 160A Power supply, front
Tek_160A_Front1.jpeg | 160A Power supply
Tek_160A_Back1.jpeg | 160A Power supply
Tek_160A-Rear.png| 160A Power supply, rear
Tek_160A-RHS.jpeg  | 160A Power supply, RHS
Tek_160A_Underside.jpeg | 160A Power supply, underside
</gallery>
</gallery>
[[Category:160 system]]

Revision as of 18:02, 1 September 2021

Tektronix 160
Modular Oscilloscope
160A 360 161 162

Produced from 1952 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 160 series is a modular instrument made from the mid-1950s (schematics drawn in 1953) to the late 1960s (in 1969 catalog). The catalog describes them as instruments designed to generate timed pulses of variable amplitude and width for use in nerve stimulation/neurophysical experiments.

A 160 series system typically includes a Type 160 power supply, a Type 360 indicator unit, and one or more of the 161, 162, and 163 trigger and sweep modules. There is also a single-unit power supply, the 126.

Each module is the size of a small shoe box. Power connections are made behind the modules using Type W160 cables that have octal connectors. The power cables can be connected in a star topology (Type 160 in the center) or can be daisy-chained using the loop-through connection on the back of each module.

Signal connections are made on the front, typically with banana plugs.

In a typical setup, the input signal is fed through a splitter to the Y-input of the 360 and the trigger input of the 161. The 161 generates a trigger pulse that controls a 162, which generates the horizontal ramp for the sweep. This ramp signal is sent to the 360 horizontal input.

The signals on the front panel of the 160-series modules are all single-ended.

According to the May 1952 issue of Tek Talk (page 6), the 160 Series entered limited production in April of 1952.


Key Specifications

     — Type 160 Power Supply
+300 V output DC, unregulated, 170 mA max
+225 V output DC, regulated, 125 mA max
+150 V output DC, regulated, 5 mA max
−170 V output DC, regulated, 125 mA max
6.3 V output AC, unregulated, 10 A max
     — Type 160A Power Supply
+300 V output DC, unregulated, 250 mA max
+225 V output DC, regulated, 175 mA max
+150 V output DC, regulated, 15 mA max
+70 V output DC, unregulated max load?
−170 V output DC, regulated, 125 mA max
6.3 V output AC, unregulated, 20 A max

Internals

The 160, 161, 162, and 163 use the ceramic strip and silver solder construction style that is prevalent in other Tektronix equipment of the era, such as the 500-series scopes like the 545.

The Type 360 indicator unit contains the CRT HV power supply and the vertical amplifier and is constructed using a single-sided printed circuit board.

The 360 has a phase splitter to generate the differential drive for the horizontal deflection plates. The 360 uses a standard 3WP series 3-inch CRT. The cathode voltage is −1850 V. No post-deflection acceleration is used.

The 160 power supply was produced with serial numbers 101-619. For serial numbers 620 and up, it is slightly different and is called the 160A.

The 160 and 160A both use a 5V4 rectifier tube for the negative voltage and two 5V4 tubes in parallel for the positive voltage.

Both use 5651 87-volt reference tubes.

The 160 and 160A differ in their output regulator circuits. The 160 uses a 6AS7 dual-triode tube, one half to regulate the +225 V output and the other half to regulate the −170 V output. The 160A uses both halves of a 6080 dual-triode in parallel to regulate the +225 V output, and two parallel 12B4 triodes to regulate the −170 V output.

Links

Pictures