Pinout

Pin #	Assignment
1	Focus (G3)
2	Focus (G4)
4	G1 Red Pin
5	Heater (F1)
6	Heater (F2)
7	G1 Blue Pin
8	Blue Pin
9	G2 Red Pin
10	Green Pin
11	G1 Green Pin
12	Red Pin

Note: If you only see one assignment or reused pin for G1 (or G2), it means there is only a single G1 (or G2) grid shared across all cathodes. This is called "common G1" (or "common G2"). In this case, when using a Universal Adapter (UA), you only have to hook up one G1 (or G2) lead on your tester to connect all cathodes' G1 or G2 properly.

Notes

The tube pinout listed elsewhere online (and the Sencore handbook) is wrong. Follow this pinout when testing the tube.

Müter Socket Adapter

Tester Model	Socket
BMR 95 & 2005	881

Sencore CRT Tester Info

Tester Model	Heater	Socket	Bias	Video
CR-7000	6.3V	UA	68V	Video 1
CR-70	6.3V	UA	68V	VIDEO
CR-31	6.3V	-	D	N/A