On-Screen Display in 3G Systems

Nov 07, 2022

Overview
Alignment
Command
Other OSD Functions

Overview

On-Screen Display is a feature of Just Add Power 2G, 2GΩ/3G, and 3G Receivers. This article references Receivers in 3G Systems. Please see this article for 2G Systems.

In a 3G System, On-Screen Display shows on the top-half of the video in either the center of the screen or the left side of the screen. A command can be sent to the Receiver to show text with variations in size, color, and position.

Alignment

In a 3G System, On-Screen Display allows for center- or left-aligned text. The output resolution of the Receiver determines the relative size of the font:

Text box on 720p video

Text box on 1080p video

Text box on 4K video

Command

osd "$STRING" [-c $RRGGBB] [-s $SIZE] [-a left/center] [-t $TIME]

Variables listed in [square brackets] are optional and use the default setting if not entered. All variables are listed below:

Variable	Options	Example	Description
`"$STRING"`	Alphanumeric characters (A-Za-z0-9)	`osd "Doorbell"`	Text to show on the screen. Must be enclosed in quotation marks (").
`-c $RRGGBB`	6-character hex code indicating RRGGBB color	`osd "Doorbell" -c FFFFFF`	Example produces white text. Default is green; `00FF00`
`-s $SIZE`	Integer from 1 to 250	`osd "Doorbell" -s 75`	Size of the font. Does not scale with the resolution of the video, so higher resolutions will show smaller text. Default is 30.
`-a left/center`	left center	`osd "Doorbell" -a left` `osd "Doorbell" -a center`	Alignment of the text on the screen. Default is center.
`-t $TIME`	Integer from 1 to 60	`osd "Doorbell" -t 10`	Number of seconds to show the text before disappearing. Default is to show text until a command turns it off.

Other OSD Functions

On-Screen Displays have other functions for debugging, identification, and disabling text.osd "the string" [-c FFFFFF] [-a left/center] [-t 10] [-s 30] [-d (debug)] [-i (identify) ] [-x (off) ]

Once the options for the On-Screen Display message have been set, the message must be enabled and disabled:

Function	Command	Example	Description
Turn Off OSD	`osd -x [seconds]`	`osd -x 10`	If [seconds] is specified, wait that many seconds before turning off OSD. Example waits 10 seconds after the command is sent to turn off OSD.
Show Debug Information	`osd -d`	`osd -d`	Shows information about the video resolution
Show Identification	`osd -i [off]`	`osd -i` `osd -i off`	Shows IP address and hostname on EVERY Receiver in the system. `off` option turns off the text.