TekWiki

422: Difference between revisions

Page Discussion Repairs

422 (view source)

Revision as of 12:35, 11 May 2014

234 bytes added ,  11 May 2014
no edit summary
No edit summary
No edit summary
Line 1: Line 1:
{{Oscilloscope Sidebar |
title=Tektronix 422 |
summary=15 MHz portable dual-trace scope |
image=Tek 422 front.jpg |
caption=Tektronix 422 front |
years=? |
manuals=
* [http://w140.com/tek_422.pdf Tektronix 422 Manual (PDF)]
* [http://w140.com/tek_422_ac_powersupply.pdf Tektronix 422 Manual, AC power supply (PDF)]
* [http://exodus.poly.edu/~kurt/mmm/tek-422.pdf Tektronix 422 Manual with AC/DC Power Supply (PDF)]
* [http://w140.com/tek_422_low_sn.djvu Tektronix 422 Manual (low sn, DjVu)]
* [http://w140.com/tek_422_sn_20000_up.pdf Tektronix 422 Manual for Serial Numbers 20,000 and up (PDF)]
* [http://w140.com/tek_422_product_reference_book.pdf Tektronix 422 Product Reference Book (PDF)]
}}
The Tektronix Type 422 is a 15 MHz portable dual-trace oscilloscope.  It was available with
The Tektronix Type 422 is a 15 MHz portable dual-trace oscilloscope.  It was available with
an optional battery back for operation without mains power.  Early versions use an  
an optional battery back for operation without mains power.  Early versions use an  
Line 10: Line 24:
feedback) and low gain for large signals (strong negative feedback).  Thus, the signal at the base
feedback) and low gain for large signals (strong negative feedback).  Thus, the signal at the base
of Q364 has a limited swing over a wide range of input amplitudes.  The collector current of Q364
of Q364 has a limited swing over a wide range of input amplitudes.  The collector current of Q364
varies between 0 and 9mA.  Depending on the position of the trigger slope control, higher collector
varies between 0 and 9 mA.  Depending on the position of the trigger slope control, higher collector
current in Q364 either switches D375 from the low-voltage state to the high-voltage state or from the
current in Q364 either switches D375 from the low-voltage state to the high-voltage state or from the
high-voltage state to the low-voltage state.  When D375 transitions from the low-voltage state to the
high-voltage state to the low-voltage state.  When D375 transitions from the low-voltage state to the
Line 19: Line 33:
The 8056 Nuvistor used in the input amplifier of the 422 can be replaced by a [[MPF102]] JFET.
The 8056 Nuvistor used in the input amplifier of the 422 can be replaced by a [[MPF102]] JFET.


* [http://w140.com/tek_422.pdf Tektronix 422 Manual (PDF)]
==Specifications==
* [http://w140.com/tek_422_ac_powersupply.pdf Tektronix 422 Manual, AC power supply (PDF)]
 
* [http://exodus.poly.edu/~kurt/mmm/tek-422.pdf Tektronix 422 Manual with AC/DC Power Supply (PDF)]
==Pictures==
* [http://w140.com/tek_422_low_sn.djvu Tektronix 422 Manual (low sn, DjVu)]
* [http://w140.com/tek_422_sn_20000_up.pdf Tektronix 422 Manual for Serial Numbers 20,000 and up (PDF)]
* [http://w140.com/tek_422_product_reference_book.pdf Tektronix 422 Product Reference Book (PDF)]


<gallery>
<gallery>
Line 50: Line 61:
File:Wellenkino 422.jpg
File:Wellenkino 422.jpg
</gallery>
</gallery>
[[Category:400 series scopes]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/9418"