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| [[500-series scopes]] (53x, 54x, and 55x) and [[127]], [[132]], [[133]] | | #redirect [[500 Series plug-in interface]] |
| have bays that take [[letter-series and 1-series plug-ins]]
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| which typically control the vertical axis of the display.
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| Two exceptions are the [[555]] and the [[536]].
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| The 555 additionally takes two 555-specific timing/sweep plug-ins (21, 22, 21A, 22A) that control the horizontal deflection of the two beams.
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| The 536 takes two [[letter-series and 1-series plug-ins|letter-series or 1-series plug-ins]]; One controls vertical, the other horizontal, in XY mode.
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| The pinout changed significantly in the 20+ year run of the 500 series. Pins 1, 2, 3, 8, 16, and all power supply pins remained the same, however.
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| The Type [[T]] timebase plugin and its host, the horizontal bay in the [[536]] also have a banana jack mounted above the main connector for retrace blanking.
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| [[580-series scopes]] use their own very similar plug-ins.
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| The pinout on the connector is as follows:
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| {| border="1" style="text-align: center;"
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| ! scope="col" | Pin number
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| ! scope="col" | Function
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| |-
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| ! scope="row" | 1
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| | Signal +
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| |-
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| ! scope="row" | 2
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| | GND
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| |-
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| ! scope="row" | 3
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| | Signal -
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| |-
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| ! scope="row" | 4
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| | Trigger - <br> 544, 546, 547, 549,<br>late 555s, and 556
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| |-
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| ! scope="row" | 5
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| | Trigger + <br> 544, 546, 547, 549,<br>late 555s, and 556
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| |-
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| ! scope="row" | 6
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| | Sawtooth<br>(556 only?)
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| |-
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| ! scope="row" | 7
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| | Alt Timebase sync on 547
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| |-
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| ! scope="row" | 8
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| | Multi-Trace Sync
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| |-
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| ! scope="row" | 9
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| | -150 V DC
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| |-
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| ! scope="row" | 10
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| | +100V DC
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| |-
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| ! scope="row" | 11
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| | +225V DC
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| |-
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| ! scope="row" | 12
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| | +350V DC
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| |-
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| ! scope="row" | 13
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| | 6.3V AC relative to pin 14
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| |-
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| ! scope="row" | 14
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| | 6.3V AC relative to pin 13
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| |-
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| ! scope="row" | 15
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| | +75V DC
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| |-
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| ! scope="row" | 16
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| | Multi-Trace Sync
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| |}
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| <gallery>
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| Image:Pluginpinout556.png|Pinout shown in 556 schematic
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| Image:Tek letter-series pinout.png|Pinout shown in 1A2 schematic
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| Image:500-series connector male front.jpg|Male pins on plugin
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| Image:500-series connector male rear.jpg|Rear lugs on plugin
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| </gallery>
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| [[Category:500 series plugins]]
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