Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Signal Description Overview

All values given below are between the respective terminal in column 1 and terminal # 15 (signal ground) unless otherwise stated in brackets after the table entry.

NOTE: It is important to connect test box and check ground terminals before taking readings.

U = DC in volts (V)
Ubat = battery voltage (V)
Ulow = voltage approx. 0 V
UAC = AC in volts (V)
f = frequency in Hertz (Hz)
%duty = duty cycle (pulse ratio) as a percentage (%)