YONGJOON.DEV / MODEL YJ-1978 / SERIAL No. 001
PERSONAL ENGINEERING NOTEBOOK / ~/since 2013
CATHODE RAY TUBE — P1 PHOSPHOR
> POWER ON
> DEGAUSS: OK
> HEATER: OK
> HV SUPPLY: +12.7kV
> CATHODE BIAS: NOMINAL
> SELF-TEST OK
>
V/DIV 0.5 T/DIV 1ms TRIG AUTO X10 PROBE
this tube is beautiful
at 2am
PATCH BAY — PROJECTS
re-patch before
compiler demo
CONTROL SECTION
TELEMETRY
MODE & BEHAVIOR
TELETYPE FEED — 5-BIT BAUDOT
[DECODED] initializing teletype...
FORM YJ-1978 / REV C / PAGE 1 OF 4

MAINTENANCE CARD

Service procedure / schematic / log
© 1978 YJ INSTRUMENTS — DO NOT DUPLICATE PAGE 1