Vivitek RP56HD21-A - Manual (Page 8)

PIP Remote Control Buttons (OPTIONAL)
Button Function
SOURCE.
Changes the input source for the
PIP window.
SCAN.
Turns PIP SCAN off and on in multi-PIP
modes. PIP SCAN displays a TV channel for
approximately 4 seconds, then automatically
goes to the next channel.
PIP.
Turns PIP mode on and off.
Number button pad.
Selects a channel for the
currently active PIP window.
100：
Enters channel numbers greater than 100
in TV mode.