500 Series plug-in interface

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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 
 AC and heater power 
 Deflection and Trigger Signals  
 Control Signals