TM500 Liquid Crystal Driver: Difference between revisions

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Mentioned in Dennis Tillman's [[List of TM500 and TM5000 equipment]]. An example turned up on eBay in October 2019 in a lot with two 5000-series oscilloscope vertical amp plugins. Only low res photos provided. Listed as TM500 plugin but compatibility unknown.
Mentioned in Dennis Tillman's [[List of TM500 and TM5000 equipment]]. An example turned up on eBay in October 2019 in a lot with two 5000-series oscilloscope vertical amp plugins. Only low res photos provided. Listed as TM500 plugin but compatibility unknown.


This appears to fit a TM-500 series frame.  
This appears to fit a TM-500 series frame.
 
The unit appears to have two channels.  
The unit appears to have two channels.
The main board is very good quality.  
There are two "proto" type boards in the unit. One is for fuses. The other has a pair of 74121 ics on it.  
The main board is very good quality.
When I got it the edge card connector was damaged, thankfully in a place where there are no used pins.  
There was one power transistor missing and I can replace it with one like in the other channel. There is also a ground binding post missing, this is easily replaced.  
There are two "proto" type boards in the unit. One is for fuses. The other has a pair of 74121 ics on it.
The pictures are of the unit as I received it.  
This has controls for PW UPPER and PW LOWER for both channels.  
When I got it the edge card connector was damaged, thankfully in a place where there are no used pins.
There is also a DELAY and AMPLITUDE control for each channel.  
There is a BNC for the top channel only INPUT.  
There was one power transistor missing and I can replace it with one like in the other channel. There is also a ground binding post missing, this is easily replaced.
There is a BNC for SYNC. The SYNC appears to go to both channels.  
There is a label on the front REL 11, so, maybe there are others out there.  
The pictures are of the unit as I received it.
The front binding posts are UPPER OUTPUT, LOWER OUTPUT and GROUND for each channel.  
The active backplane pins are 2A, 3A, 6A, 7A, 8A, 9A, 10A, 12A, and 7B. 8B, 11B and 8A are connected. 12A and 12B are connected together. All of these pins are power related, so the only inputs and outputs are via the front panel. There is a keyway between pins 6 and 7.  
This has controls for PW UPPER and PW LOWER for both channels.
There are "flying" jumpers between some IC pins with some of these pins lifted from the sockets. Probably still a work in progress.  
The front panel is thin aluminum with, what looks like, photo etching for the labeling and shading.  
There is also a DELAY and AMPLITUDE control for each channel.
There is a BNC for the top channel only INPUT.
There is a BNC for SYNC. The SYNC appears to go to both channels.
There is a label on the front REL 11, so, maybe there are others out there.
The front binding posts are UPPER OUTPUT, LOWER OUTPUT and GROUND for each channel.
The active backplane pins are 2A, 3A, 6A, 7A, 8A, 9A, 10A, 12A, and 7B. 8B, 11B and 8A are connected. 12A and 12B are connected together. All of these pins are power related, so the only inputs and outputs are via the front panel. There is a keyway between pins 6 and 7.
There are "flying" jumpers between some IC pins with some of these pins lifted from the sockets. Probably still a work in progress.
The front panel is thin aluminum with, what looks like, photo etching for the labeling and shading.
Harmonica connectors are used to connect to the board.  
Harmonica connectors are used to connect to the board.  


Revision as of 17:35, 27 December 2019

(Unknown mfg) Liquid Crystal Driver
(Unknown mfg) Liquid Crystal Driver

Produced from (?) to (?)

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

The (Unknown mfg) Liquid Crystal Driver is a plug-in for the TM500 system.

Mentioned in Dennis Tillman's List of TM500 and TM5000 equipment. An example turned up on eBay in October 2019 in a lot with two 5000-series oscilloscope vertical amp plugins. Only low res photos provided. Listed as TM500 plugin but compatibility unknown.

This appears to fit a TM-500 series frame.

The unit appears to have two channels.

The main board is very good quality.

There are two "proto" type boards in the unit. One is for fuses. The other has a pair of 74121 ics on it.

When I got it the edge card connector was damaged, thankfully in a place where there are no used pins.

There was one power transistor missing and I can replace it with one like in the other channel. There is also a ground binding post missing, this is easily replaced.

The pictures are of the unit as I received it.

This has controls for PW UPPER and PW LOWER for both channels.

There is also a DELAY and AMPLITUDE control for each channel.

There is a BNC for the top channel only INPUT.

There is a BNC for SYNC. The SYNC appears to go to both channels.

There is a label on the front REL 11, so, maybe there are others out there.

The front binding posts are UPPER OUTPUT, LOWER OUTPUT and GROUND for each channel.

The active backplane pins are 2A, 3A, 6A, 7A, 8A, 9A, 10A, 12A, and 7B. 8B, 11B and 8A are connected. 12A and 12B are connected together. All of these pins are power related, so the only inputs and outputs are via the front panel. There is a keyway between pins 6 and 7.

There are "flying" jumpers between some IC pins with some of these pins lifted from the sockets. Probably still a work in progress.

The front panel is thin aluminum with, what looks like, photo etching for the labeling and shading.

Harmonica connectors are used to connect to the board.

The construction looks good, but not of Tektronix quality.

Pictures

  • ebay picture

    ebay picture

  • ebay picture

    ebay picture

  • Top

    Top

  • Front

    Front

  • Bottom

    Bottom

  • Flying Jumpers

    Flying Jumpers

  • Back of Front showing construction

    Back of Front showing construction

  • Missing transistor and fuses

    Missing transistor and fuses

  • Board part number

    Board part number

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