232-STSi Stereo PAL TV Tuner

Installation

Firmware Downloads

There are two firmware versions available for download, one supports fixed-frequency channel plans for countries, and the other is designed to scan channels, and allows a mixing of broadcasting standards from adjacent countries. The 232-STSi is standardly shipped with firmware for channel scanning, but can be easily changed to channel-map tuning.

232-STSi V 4.5 firmware for fixed channel/frequency plans
232-STSi V 6.1 firmware for scanning and saving channel presets

See the AV Firmware page for instructions on installing firmware.

Balanced/Unbalanced/RCA Audio Wiring

RS-232/Closure Wiring

All drawings show pin numbers relative to a PC COM port or typical control system DB-9 RS-232 control port. Pin-outs to other types of control ports may vary. Pins 4 and 9 are momentary closures to GND(5).

RS-232 wiring for control or programming should only use pins 2, 3, 5. Cables with all pins wired can lock out front-panel programming and data communication (Pins 4 and 9 are inputs, not CTS/RTS).

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.

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