Here's a copy & paste from a Xiegu X5105 users manual - "For Firmware V3.0 Edited by KE4RG"
Xiegu X5105 Operating Manual 16
Menu4 Keyer and CW Parameters
Key - TAP to scroll through:
MAN - Select to disable keyer and select manual or straight key.
AUTO-L - Select to enable keyer and select paddle for left hand.
AUTO-R - Select to enable keyer and select paddle for right hand.
TONE ¨C TAP to set sidetone (transmit offset) using [KNOB] (425Hz to 1200Hz).
TAP TONE to save and exit.
QSKTIME ¨C TAP to set CW break in delay time using [KNOB] (0nSec to 1000nSec).
TAP QSKTIME to save and exit.
HOLD QSKTIME to restore default value (100nS).
NOTE: The X5105 uses a relay to switch Tx/Rx. Full break-in is not possible. Set this value
high enough to prevent switching during your normal inter-character time.
QSK - TAP to toggle CW Transmit Enable ON or OFF
NOTE: Set QSK OFF to disable the transmitter and enable Code Practice Oscillator (CPO).
Hope this helps.
Brian Smith