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232-ATSC HDTV Tuner

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Installation

Display Troubleshooting

Symptom: No RGB or Component Video output.
Check the RGB or Component output setting in Front Panel mode 48 (48.0 is RGB, 48.2 is Component).

Symptom: No output display on VGA input.
Some monitors or projectors do not support 1080i or 720P operation on the RGB port. Set resolution in Front Panel mode 49 (49.2 for 480P).

Symptom: No output display of HDMI/DVI video.
Some monitor and projector HDMI/DVI ports (primarily DVI) do not support the required HDCP handshake.

Symptom: No audio or fluttering sound in display conncected via HDMI.
Change ATSC digital audio to PCM or PCM variable (most displays do not use Dolby 5.1).

The tuner may need Control/HD firmware updates. You can use RS-232 commands to change settings as well.

RS-232/Closure Wiring

All drawings show pin numbers relative to a PC COM port or typical control system RS-232 ports. Pins 4 and 9 are momentary closures to GND (5). A fully-wired null modem cable can be used for RS-232 control, a DTR signal on Pin 4 will not trigger a Channel Up commmand.

Up to nine tuners can be daisy-chained from one RS-232 control port. Remember that you will need to use the Unit# address in your programming when you control more than one tuner from the same control port.

Set the first unit in the RS-232 chain to the highest Unit#, then wire in sequence to the last tuner in the chain. The reason for this is that CR tuners use an intelligent data bus - the highest number tuner receives all commands, and then passes on commands addressed to tuners with lower unit numbers. The next tuner in the chain does the same, and so on until the last unit.

IR Control

The 232-ATSC IR codes are avialable in AMX, Crestron, and Prono formats, and include discrete power on, off commands. To review command options, open the Pronto list in the HTML file. Download from Resources menu on the right.