500 Series plug-in interface: Difference between revisions

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[[File:500 series plugin interface V.png|thumb|250px|right| Plug-in pinout from [[535]] schematic - click to enlarge]]  
[[File:500 series plugin interface V.png|thumb|200px|right| Plug-in pinout from [[535]] schematic - click to enlarge]]  


The '''plug-in interface of the [[500-series scopes]]''' is a single 16-pin Amphenol connector.
The '''plug-in interface of the [[500-series scopes]]''' is a single 16-pin Amphenol connector.
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|  1 || bgcolor="Yellow"    | +Signal            ||  100 mV/cm, bias +67.5 V ±2%
|  1 || bgcolor="Yellow"    | +Signal            ||  100 mV/cm, bias +67.5 V ±2%
|-  
|-  
|  2 ||                     | Ground            ||   
|  2 || bgcolor="Pink"        | Ground            ||   
|-  
|-  
|  3 || bgcolor="Yellow"    | −Signal            ||  100 mV/cm, bias +67.5 V ±2%
|  3 || bgcolor="Yellow"    | −Signal            ||  100 mV/cm, bias +67.5 V ±2%
|-  
|-  
|  4 || bgcolor="Yellow"    | Int Trig GND      ||  [[544]], [[546]], [[547]], [[549]], [[556]], late [[555]] only
|  4 || bgcolor="Yellow"    | Int Trig GND      ||  [[544]], [[546]], [[547]], [[549]],<br />[[556]], late [[555]] only
|-  
|-  
|  5 || bgcolor="Yellow"    | Int Trig +        ||  [[544]], [[546]], [[547]], [[549]], [[556]], late [[555]] only
|  5 || bgcolor="Yellow"    | Int Trig +        ||  [[544]], [[546]], [[547]], [[549]],<br />[[556]], late [[555]] only
|-  
|-  
|  6 || bgcolor="LightGreen" | Sawtooth          || [[556]] only, others n/c  
|  6 || bgcolor="LightGreen" | Sawtooth          || [[556]] only, others n/c  
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|  7 || bgcolor="LightGreen" | Slave Pulse out    ||  [[547]] only
|  7 || bgcolor="LightGreen" | Slave Pulse out    ||  [[547]] only
|-  
|-  
|  8 || bgcolor="LightGreen" | Multi-trace sync  ||  Cathode; grounded by [[CA]], [[M]] etc. in Alt Trace mode
|  8 || bgcolor="LightGreen" | Multi-trace sync  ||  Cathode; grounded by [[CA]],<br />[[M]] etc. in Alt Trace mode
|-  
|-  
|  9 || bgcolor="Pink"      |  −150 V            ||  min. 3.8 mA, max. 60 mA
|  9 || bgcolor="Pink"      |  −150 V            ||  min. 3.8 mA, max. 60 mA
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| 12 || bgcolor="Pink"      |  +350 V            ||  min. 0 mA, max. 20 mA
| 12 || bgcolor="Pink"      |  +350 V            ||  min. 0 mA, max. 20 mA
|-  
|-  
| 13 || bgcolor="LightBlue"  |  6.3 V<sub>AC</sub>    ||  plug-in AC heater supply, max. 2.8 A
| 13 || bgcolor="LightBlue"  |  6.3 V<sub>AC</sub>    ||  plug-in AC heater supply,<br />max. 2.8 A
|-  
|-  
| 14 || bgcolor="LightBlue"  |  6.3 V<sub>AC</sub>    ||  return for pin 13
| 14 || bgcolor="LightBlue"  |  6.3 V<sub>AC</sub>    ||  return for pin 13
|-  
|-  
| 15 || bgcolor="Pink"      |  +75 V            ||  min./max. 150 mA for DC series heaters and LV supply 
| 15 || bgcolor="Pink"      |  +75 V            ||  min./max. 150 mA for DC<br />series heaters and LV supply 
|-  
|-  
| 16 || bgcolor="LightGreen" | Multi-trace sync  ||  Anode
| 16 || bgcolor="LightGreen" | Multi-trace sync  ||  Anode
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:{|
:{|
|-
|-
| bgcolor="Pink"        |  DC power 
| bgcolor="Pink"        |  DC power and ground
|-
|-
| bgcolor="LightBlue"  |  AC and heater power 
| bgcolor="LightBlue"  |  AC and heater power 

Revision as of 05:16, 2 September 2018

Plug-in pinout from 535 schematic - click to enlarge

The plug-in interface of the 500-series scopes is a single 16-pin Amphenol connector.

Pin-out

Pin Function Comment
1 +Signal 100 mV/cm, bias +67.5 V ±2%
2 Ground
3 −Signal 100 mV/cm, bias +67.5 V ±2%
4 Int Trig GND 544, 546, 547, 549,
556, late 555 only
5 Int Trig + 544, 546, 547, 549,
556, late 555 only
6 Sawtooth 556 only, others n/c
7 Slave Pulse out 547 only
8 Multi-trace sync Cathode; grounded by CA,
M etc. in Alt Trace mode
9 −150 V min. 3.8 mA, max. 60 mA
10 +100 V min. 4.5 mA, max. 50 mA
11 +225 V min. 16 mA, max. 75 mA
12 +350 V min. 0 mA, max. 20 mA
13  6.3 VAC plug-in AC heater supply,
max. 2.8 A
14  6.3 VAC return for pin 13
15 +75 V min./max. 150 mA for DC
series heaters and LV supply 
16 Multi-trace sync Anode

Pin group function legend

 DC power and ground
 AC and heater power 
 Deflection and Trigger Signals  
 Control Signals 

Internal Trigger signal

In early 500-series systems (e.g., a Type C plug-in in a 535 mainframe), the mainframe's triggering is based on the main vertical signal (pins 1/3).

In these scopes, changing the vertical position control on the plug-in interacts with the trigger level setting if the scope is set to a DC trigger mode.

In somewhat later 500-series systems (e.g. Type 547), the plug-in (e.g. Type 1A1) provides the mainframe with a separate trigger signal on pin 5 whose DC level is not affected by the vertical position knob. In multi-trace setups, this allows consistent triggering from a specific input channel independent of which channel is currently being drawn on CRT.

For backward compatibility, the 547-era scopes have two types of INT triggering, taking the trigger signal either from the main vertical plug-in output (1/3), or the trigger output (5).

Although the Type 1A1 has two input channels, they are not identical - the pin 5 internal trigger signal is always taken from channel 1. Even later 500-series plug-ins (e.g., the Type 1A4), have a knob for the selection of which input channel's signal supplies the trigger signal.