Wiring Schemes for the FOR-22 Interface Module
Pinout of DB-9M I/O connector for FOR-22 | |
|---|---|
Connector | Description |
| Pin 1 and Pin 6 = Audio output |
| Pin 2 and Pin 7 = Audio input |
| Pin 3 and Pin 8 = Logic input (+ / - 4 to 50V) |
| Pin 4 = Relay normally closed |
| Pin 9 = Relay wiper |
| Pin 5 = Relay normally open |
The FOR-22 four-wire/radio interface connects two external four-wire circuits to the matrix. Camera intercoms, two-way radios, microwave and satellite links, IFBs, and program audio in and out are candidates for use with the FOR-22.
A FOR-22 interface connects to an Eclipse HX matrix through the two RJ-45 connectors on its rear panel.
The top RJ-45 is for the first channel of the interface module. The lower RJ-45 is for the second channel.
The user side of the FOR-22 for each channel appears on a DB-9M connector on the rear of the IMF-3 or IMF-102 frame. Each channel is identical. The following sections describe how to wire for the various types of inputs and outputs available on the DB-9M connector:
External audio devices.
Call signal input.
Relay contacts.
Note: Shielded CAT5 cable should be used, where possible.
External audio devices
Connect external audio devices to the FOR-22 ports through the two DB-9M connectors labeled “I/O” on the rear panel. Both the audio input and the audio output are transformer isolated.
| Note: | For more information on the various level ranges available on the input and output, see the FOR-22 Manual. |
Call Signal Input
The Call Signal input is used to receive a call/logic input signal from an external device and send it to the matrix. The voltage across the pins required to receive a call signal ranges from 4 - 50V; + / - AC. The input will draw between 4 and 8 mA.
Relay Contacts
Each FOR-22 interface channel features a relay that is associated with the logical call signal output of a port. A relay’s function depends on the function assigned to the FOR-22 port through the EHX configuration software. A relay can be assigned to operate with any label in the system: when that label is activated (either by a talk, listen, or both, as set from the configuration program), the relay will activate.
| Note: | For more information about configuring a relay, see EHX Help. |
The relay can be used to activate an external device, such as an applause light in a studio, a cue light, or a security-door lock. The relays feature both normally open and normally closed contacts. The contacts are rated at 1 A at 24 VDC; they are not designed for switching mains AC line voltage.