TM5000 Series plug-in interface: Difference between revisions

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'''Tektronix [[TM500 and TM5000 mainframes|TM5000 mainframes]]''' provide power supplies and signal connections for [[TM500 and TM5000 plug-ins|TM5000 plug-ins]].
'''Tektronix [[TM500 and TM5000 mainframes|TM5000 mainframes]]''' provide power supplies and signal connections for [[TM500 and TM5000 plug-ins|TM5000 plug-ins]].
Mechanically, the main interface is a direct card-edge connector with 28 contacts on either side (numbered from 1 at the bottom to 28 on the top) at 5/<sub>32</sub>" (~0.156" or 3.96 mm) spacing. The connector can be keyed in several places, the plug-in boards have matching cuts between contacts (see below).  An additional 20-contact card edge connector carries the [[GPIB]] signals.


There are two dedicated, floating 25 V<sub>AC</sub> transformer windings per slot, as well as several AC and DC buses shared by all slots.<br />
There are two dedicated, floating 25 V<sub>AC</sub> transformer windings per slot, as well as several AC and DC buses shared by all slots.<br />
For each slot, two uncommitted transistors (one NPN and one PNP) are mounted in the mainframe. These are available for the module's power regulation circuits.
For each slot, two uncommitted transistors (one NPN and one PNP) are mounted in the mainframe. These are available for the module's power regulation circuits.
Whereas TM500 mainframes supply filtered, unregulated DC voltages, in TM5000 units a switch-mode power supply feeds the DC rails.
 
Whereas TM500 mainframes supply filtered, unregulated DC voltages, in TM5000 units a switch-mode power supply feeds the DC rails and provides regulated voltages. These voltages are lower than the ones specified for TM500 mainframes, but the lowest specified supply voltages coincide, ensuring full backwards compatibility of TM500 plugins when operated in TM5000 mainframes.


The signal pin connections depend on the individual modules.  For details, please see the [[Media:070-2088-00.pdf|TM 500 Rear Interface Data Book]].
The signal pin connections depend on the individual modules.  For details, please see the [[Media:070-2088-00.pdf|TM 500 Rear Interface Data Book]].
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{| class="wikitable"
{| class="wikitable"
|-
|-
!width="10%"|&nbsp;
!width="10%"| Pin
!width="45%"| B side
!width="45%"| B side<br>Function
!width="45%"| A side
!width="45%"| A side<br>Function
|-
|-
! Pin
! Function
! Function
|- bgcolor="Yellow"  
|- bgcolor="Yellow"  
| 28..14 || Signals || Signals
! 28..14
| Signals || Signals
|- bgcolor="LightBlue"  
|- bgcolor="LightBlue"  
| 13 || 25 V<sub>AC</sub> winding #1 || 25 V<sub>AC</sub> winding #1
! 13
| 25 V<sub>AC</sub> winding #1       ||                       25 V<sub>AC</sub> winding #1
|- bgcolor="Pink"  
|- bgcolor="Pink"  
| 12 || +26 V<sub>DC</sub> || +26 V<sub>DC</sub>
! 12
| +26 V<sub>DC</sub> ±2.3 V          ||                       +26 V<sub>DC</sub> ±2.3 V
|- bgcolor="LightGreen"
|- bgcolor="LightGreen"
| 11 || Collector lead of PNP series pass || Base lead of PNP series pass
! 11
| Collector lead of PNP series pass   ||                       Base lead of PNP series pass
|-
|-
| 10 || Transformer shield lead || bgcolor="LightGreen" | Emitter lead of PNP series pass
! 10
| Transformer shield lead             || bgcolor="LightGreen" | Emitter lead of PNP series pass
|- bgcolor="Pink"  
|- bgcolor="Pink"  
| 9 || Ground || Ground
! 9
| Ground || Ground
|- bgcolor="Pink"  
|- bgcolor="Pink"  
| 8 || −26 V<sub>DC</sub> || −26 V<sub>DC</sub>
! 8
| −26 V<sub>DC</sub> ±2.3 V          ||                       −26 V<sub>DC</sub> ±2.3 V
|- bgcolor="LightGreen"
|- bgcolor="LightGreen"
| 7 || Collector lead of NPN series pass || Emitter lead of NPN series pass
! 7
| Collector lead of NPN series pass   ||                       Emitter lead of NPN series pass
|- bgcolor="Black"
|                  ||                ||
|-
|-
| 6 || PWR || bgcolor="LightGreen"| Base lead of NPN series pass
! 6
| PWR                                 || bgcolor="LightGreen"| Base lead of NPN series pass
|- bgcolor="LightBlue"  
|- bgcolor="LightBlue"  
| 5 || 17.5 V<sub>AC</sub> winding || 17.5 V<sub>AC</sub> winding
! 5
| 17.5 V<sub>AC</sub> winding         ||                       17.5 V<sub>AC</sub> winding
|- bgcolor="Pink"  
|- bgcolor="Pink"  
| 4 || Ground || Ground
! 4
| Ground                             ||                       Ground
|- bgcolor="Pink"  
|- bgcolor="Pink"  
| 3 || Ground || Ground  
! 3
| Ground                             ||                       Ground
|- bgcolor="Pink"  
|- bgcolor="Pink"  
| 2 || +8 V filtered DC || +8 V filtered DC
! 2
| +8 V<sub>DC</sub>  +0.5/-0.4 V      ||                       +8 V<sub>DC</sub>  +0.5/-0.4 V
|- bgcolor="LightBlue"  
|- bgcolor="LightBlue"  
| 1 || 25 V<sub>AC</sub> winding #2 || 25 V<sub>AC</sub> winding #2
! 1
| 25 V<sub>AC</sub> winding #2       ||                       25 V<sub>AC</sub> winding #2
|-
|-
|}
|}
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Interface connections viewed from rear of power module. Pins 14 through 28 are used for signal connections.
Interface connections viewed from rear of power module. Pins 14 through 28 are used for signal connections.


===Pin group function legend===
:{|
:{|
|-
|-
|+ Pin group function legend
| bgcolor="Pink"        |  DC power and ground
| bgcolor="Pink"        |  DC power and ground
|-
|-
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|-  
|-  
| bgcolor="LightGreen"  |  Uncommitted transistors
| bgcolor="LightGreen"  |  Uncommitted transistors
|}
==Barrier Keys==
The [[TM500 Series Rear Interface Data Book]] details the various positions for keys. Here's a summary for reference.
{| class="wikitable"
|+ Barrier Key Positions
|-
!width="20%"| Pins
!width="80%"| Purpose
|-
! 25-26
| [[SC502]] Family
|-
! 24-25
| Logic Analyzer Family
|-
! 23-24
| Signal Source Family
|-
! 22-23
| [[TR502]]
|-
! 21-22
| Measurement Family
|-
! 19-20
| Power Supply Family
|-
! 17-18
| DMM Family
|-
|}
|}


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==See also==
==See also==
* [[TM500 Series plug-in interface]]
* [[TM500 Series plug-in interface]]
* [[Media:070-2088-00.pdf|Tektronix TM 500 Series Rear Interface Data Book (PDF)]]
* [[TM500 Series Rear Interface Data Book]]
* [http://w140.com/smb/TM5X_RIB_FREE.pdf Tektronix TM 500 Series Rear Interface Data Book (OCR, PDF)]




[[Category:Plug-in interfaces]]
[[Category:Plug-in interfaces]]

Latest revision as of 14:22, 1 March 2024

Tektronix TM5000 mainframes provide power supplies and signal connections for TM5000 plug-ins.

Mechanically, the main interface is a direct card-edge connector with 28 contacts on either side (numbered from 1 at the bottom to 28 on the top) at 5/32" (~0.156" or 3.96 mm) spacing. The connector can be keyed in several places, the plug-in boards have matching cuts between contacts (see below). An additional 20-contact card edge connector carries the GPIB signals.

There are two dedicated, floating 25 VAC transformer windings per slot, as well as several AC and DC buses shared by all slots.
For each slot, two uncommitted transistors (one NPN and one PNP) are mounted in the mainframe. These are available for the module's power regulation circuits.

Whereas TM500 mainframes supply filtered, unregulated DC voltages, in TM5000 units a switch-mode power supply feeds the DC rails and provides regulated voltages. These voltages are lower than the ones specified for TM500 mainframes, but the lowest specified supply voltages coincide, ensuring full backwards compatibility of TM500 plugins when operated in TM5000 mainframes.

The signal pin connections depend on the individual modules. For details, please see the TM 500 Rear Interface Data Book.

Pin B side
Function 		A side
Function
28..14 Signals Signals
13 25 VAC winding #1 25 VAC winding #1
12 +26 VDC ±2.3 V +26 VDC ±2.3 V
11 Collector lead of PNP series pass Base lead of PNP series pass
10 Transformer shield lead Emitter lead of PNP series pass
9 Ground Ground
8 −26 VDC ±2.3 V −26 VDC ±2.3 V
7 Collector lead of NPN series pass Emitter lead of NPN series pass
6 PWR Base lead of NPN series pass
5 17.5 VAC winding 17.5 VAC winding
4 Ground Ground
3 Ground Ground
2 +8 VDC +0.5/-0.4 V +8 VDC +0.5/-0.4 V
1 25 VAC winding #2 25 VAC winding #2

Interface connections viewed from rear of power module. Pins 14 through 28 are used for signal connections.

Pin group function legend
 DC power and ground
 AC power 
 Signals  
 Uncommitted transistors

Barrier Keys

The TM500 Series Rear Interface Data Book details the various positions for keys. Here's a summary for reference.

Barrier Key Positions
Pins Purpose
25-26 SC502 Family
24-25 Logic Analyzer Family
23-24 Signal Source Family
22-23 TR502
21-22 Measurement Family
19-20 Power Supply Family
17-18 DMM Family

Used in

See also

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