Specifications

listed. The first time the switch is pressed the first program plays. The next time the switch is
pressed the second program plays and so forth. Thus one switch on the board could play all
the programs assigned to that switch during a broadcast day.
Another switch could be used to stop the program. This would be similar to the “PLAY” and
“STOP” remote switches used for a CD player.
A text trigger can be sent by an automation program through an RS-232 serial port with a
specific instruction to start a program. Again, the same text can be sent and the programs
would play in the order they are listed. However, text commands can be more specific and
call an exact program. A text string can be as specific as PLAY-TTT5-11-11-11 or as general
as PLAY. The AMB-OS Utility program can build that list for you. The playlist manual can
be found at http://www.amb-os.com/support.html.
Timed Playback
A schedule can be set up to play a file at a specific time for recording or going live to air.
Thus if you played Back to the Bible right after the news at 10:04:30, a schedule can setup to
play the program for that day at 10:04:30. The same thing can be done for playback a file for
recording overnight. You can have the AMB-OS transfer program build a list of files that you
want to record and then have your automation record them when you want to record them.
The Amb-OS Utility program can build that playlist for you. The playlist manual can be
found at http://www.amb-os.com/support.html.
Relay Description
The output relays can be customized to your needs, but misusing this feature, you can
experience unexpected results. This section describes how the relays are used. The wiring for
the relay closures can be found in RELAY SPECIFICATIONS and the assignment of relays
can be found in Closure Map.
Relays are sent by program providers and can be embedded in recorded programs and
interfaced with an automation system. Four relays are used for programming functions and
two are assigned to specific functions. Relays #1-#4 are for general programming use. Relay
#5 is used as the clock sync pulse for setting clocks. Relay #6 is used to indicate a failure in
the receiver. Four conditions are monitored:
1. RF
2. LNB short
3. Ethernet connection
4. Internet connection to the uplink server
When Relay #6 is triggered, the front panel indication is used to determine what has
happened. As described in the FRONT PANEL DESCRIPTION section, there are three
boxes in the middle of the screen. For example, if relay #6 was triggered and the front panel
indicated a loss to the Internet, you would know that the receiver still had RF and was
connected to your local network, but it could not find the uplink server through the Internet.
Rev. 36 – Firmware version 1.61 10
©
2008
WARNING
Whenever you begin a new program that uses relay closures, be sure you get a
specification of how the program provider intends on using the closures.