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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 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. Each module is the size of a small shoe box.   
|model=160
Power connections are made behind the modules using cables that have  
|series=160
[[connectors|octal connectors]].   
|summary=Modular Oscilloscope
The power cables can be connected in a star topology (Type 160 in the center)  
|image=Tek_160a_360_161_162_trace.jpg
or can be daisy-chained using the loop-through connection on the back of each module.  
|caption=160A 360 161 162
|introduced=1952
|discontinued=(?)
|designers=
|manuals=
* [[Media:070-067.pdf|Tektronix 160A Manual]] (1959 rev.)
* [[Media:070-220.pdf|Tektronix 160-series Manual]] (1960 rev.)
* [https://archive.org/download/070-0220-01/070-0220-01.pdf Tektronix 160-series Manual] (1968 rev.)
* [[Media:Tek_360_160_irb.pdf|Tektronix 160-series Instrument Reference Book]] (OCR, 210MB!)
* [https://archive.org/download/tek_160a/tek_160a.pdf Tektronix 160A Manual]
* [[Media:Tek 160a fcp.pdf|Tektronix 160a Factory Calibration Procedure]] (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.
 
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.
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 [[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.   
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 like the [[545]].
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.
 
* [[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-bearing 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  
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.
and is constructed using a single-sided printed circuit board.


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.
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 360 uses a standard [[3WP|3WP series 3-inch CRT]].   
The cathode voltage is -1850 volts.  No post-deflection acceleration is used.
The cathode voltage is −1850 V.  No post-deflection acceleration is used.


The 160 power supply was produced with serial numbers 101-619.   
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.   
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  
The 160 and 160A both use a [[5V4]] rectifier tube for the negative voltage  
and two 5V4 tubes in parallel for the positive voltage.
and two 5V4 tubes in parallel (5V4/V8 added in parallel from SN > 324) for the positive voltage.  
The 5V4s were replaced with [[5AR4]] from SN 10250.
 
Both use [[5651]] 87-volt reference tubes.   
Both use [[5651]] 87-volt reference tubes.   
The 160 and 160A differ in their output regulator circuits.   
The 160 and 160A differ in their output regulator circuits.   
The 160 uses a [[6AS7]] dual-triode tube, one half to regulate the +225V output  
The 160 uses a [[6AS7]] dual-triode tube, one half to regulate the +225 V output  
and the other half to regulate the -170V output.  The 160A uses both halves of a  
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 +225V output,  
[[6080]] dual-triode in parallel to regulate the +225 V output,  
and two parallel [[12B4]] triodes to regulate the -170V output.
and two parallel [[12B4]] triodes to regulate the −170 V output.
 
* [http://bama.edebris.com/download/tek/160/tek%20160.pdf Tektronix 160-series Manual (PDF)]


==Links==
* [https://vintagetek.org/160-series-instruments/ 160 @ Vintage Tek]


==Pictures ==
<gallery>
<gallery>
Image:Tek 160 dn1.jpg|photo courtesy of Dave Nicol
Tek 160 dn1.jpg|photo courtesy of Dave Nicol
Image:Tek 160 dn2.jpg|photo courtesy of Dave Nicol
Tek 160 dn2.jpg|photo courtesy of Dave Nicol
Image:Tek 160 schem.png|160 schematic
Tek 160 schem.png|160 schematic
Image:Tek 160a schem.png|160A 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
Tek160_front.jpeg | 160 Front, SN 307
Tek160_iso.jpeg | 160 Side
Tek160_top.jpeg | 160 Top (2x5V4 rectifier)
Tek160_rear.jpeg | 160 Rear
Tek160_underside.jpeg | 160 Underside
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>
==Components==
{{Parts|160}}
[[Category:160 system]]

Latest revision as of 07:26, 2 February 2024

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-bearing 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 (5V4/V8 added in parallel from SN > 324) for the positive voltage. The 5V4s were replaced with 5AR4 from SN 10250.

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

Components

Some Parts Used in the 160

Part Part Number(s) Class Description Used in
120-0054-00 120-0054-00 Discrete component power transformer 160
12AU7 154-041 154-0041-00 154-0287-00 Vacuum Tube (Dual Triode) dual medium-μ triode 104 104A 122 160 161 162 181 190 310 310A 316 317 3C66 502 502A 507 511A 512 516 517 517A 524 526 535 536 545 545A 545B 547 549 555 561 564 570 575 581 581A 585 585A C D E N Q Hickok 1825
5651 154-052 154-0052-00 154-0288-00 Gas Discharge Tube (Voltage regulator) 87 V voltage reference 128 160 310 310A 502 503 504 511A 512 516 517 524 526 531 531A 535 536 541 541A 543 543A 543B 545 545A 545B 570 549 581 581A 585 585A
5AR4 154-0168-00 Vacuum Tube (Dual Rectifier) dual rectifier 502 502A 160
5V4G 154-008 154-0008-00 Vacuum Tube (Dual Rectifier) dual rectifier 104 104A 160 511A 514
6080 154-0056-00 154-0315-00 Vacuum Tube (Dual Triode) dual power triode 132 160 316 317 516 535 535A RM35A 541 541A 535 536 545 545A 545B 546 547 549 565 567 575 581 581A 585 585A
6AS7 154-020 154-0020-00 Vacuum Tube (Pentode) dual power triode 160 506 511A 512 513 517 517A 524 561 561A 561S 564
6AU6 154-0022-00 157-0073-00 157-0059-00 154-0284-00 Vacuum Tube (Pentode) RF pentode 107 160 181 190 60 2A60 72 3A72 3C66 310 310A 316 317 360 502 502A 506 511 511A 512 513 516 517 517A 524 526 529 RM529 531 531A 535 536 545 545A 546 547 549 555 561 561A 561S 564 565 567 570 575 581 581A 585 585A 80 C CA Q
6AW8 154-0095-00 Vacuum Tube (Triode/Pentode) triode-pentode combo 132 160 541 535 545
6U8 154-0033-00 Vacuum Tube (Triode/Pentode) triode-pentode combo 130 160 163 310 315 316 524 535 545 T