Sonance Typical ACB1 System, Emitter Output Ports High and Low Power Settings

CAUTION: Do not use unregulated 12V power supply adapters from other manufacturers. These may deliver excessive voltage to the IR receivers and cause them to “latch-up”. When this occurs, the “talk-back” LEDs and VE1 emitters (if used) will stay on continuously!

PWR

+12VDC

GND

GND

SIGNAL

IR

RCVR

CONNECTING	CR1 HUB	EMITTERS
BLOCK

Fig. 2: A Typical ACB1 System

4. For clarity, connections in this illustration are shown going to a 3-conductor bus in a "daisy chain" fashion. In an actual installation, however, it is recommended that 4-conductor "home-runs" be pulled from each room to the ACB1 Connecting

Block in the main room. This maintains higher power supply voltage to each IR receiver and keypad for best operation (plus a spare lead).

5. The "IR RCVR" jack on the ACB1 allows the SMR1P and the CR1 (with a 3.5 mm stereo mini plug) to be plugged directly into the ACB1. You

can do this when the ACB1 Connecting Block is

within reach of the IR receiver's cable -- such as when installing the SMR1P in a cabinet where the controlled equipment is behind closed doors.

CAUTION: Plug only Sonance IR Receivers equipped with a stereo mini plug into the IR RCVR jack. Do not plug in emitters or other devices. To do so will destroy emitters and damage power supplies!

Emitter Output Ports - High and Low Power Settings

The emitter ports are driven in parallel with a choice of either a 100 Ohm or a 470 Ohm resistor connected in series with each port. The 100 Ohm choice delivers high power output and the 470 Ohm setting is lower power. The high power setting is achieved by plugging a small jumper (10 are supplied) onto the pair of pins adjacent to the desired emitter port, as shown in Fig. 3 below. The low power option is with the jumper removed.

NOTE: The ACB1’s are shipped from the factory with the jumpers removed (low power position).

Consider the following factors when choosing high or low power modes:

1.In the majority of cases, when you mount an emitter on the IR sensor window of the con- trolled device, you would use the low power mode (jumpers removed).

This prevents overload of high gain sensor circuits and allows proper operation.

2.The high power mode may be used in installations where you mount the emitters on an

Pg 2