Sony PCS-TL50 Operating Instructions Manual page 100

Main: Select the picture shot by the remote camera.
Object: Select the picture from the optional PCS-DS150/DS150P Document
Stand connected to the system on the remote site.
AUX 1: Selects the picture from the equipment connected to the VIDEO IN
AUX 1 connector of the system on the remote site.
AUX 2: Select the picture from the equipment connected to the VIDEO IN
AUX 2 connector of the system on the remote site.
VCR: Select the picture input from the VCR connected to the system on the
remote site. This item does not appear unless the remote system is equipped
with the video input select function.
For information on the DSB input mode, see "To select a picture from a
computer connected to the Data Solution Box" on page 134.
3
Press the ENTER button on the Remote Commander.
100
Selecting the Input Picture and Sound