Specifications

HDS4x2 User Guide, Rev 1.1, 08-31-07

IR Jack, IR Format and IR Codes

12V on / off control

IN-1IN-3

IN-2IN-4

OUT-1

ANALOG AUDIO INPUT

ANALOG AUDIO OUTPUT

DIGITAL AUDIO

OUT-2

RS232 9VDC

IR-IN

Y/G Pb/B Pr/R Y/G Pb/B Pr/R Y/G Pb/B Pr/R

IN-1

R IN-1 L R IN-2 L

R IN-3 L R IN-4 L

R OUT-1 L IN-1 IN-2 OUT-1

IN-3 IN-4 OUT-2R OUT-2 L

IN-2 IN-3 IN-4 OUT-1 OUT-2

The rear panel IR-IN jack

, if not being used as an IR control jack, can be used as to turn the HDS4x2 on

and off with a 12V control voltage.

To enable or disable the 12V on/off control option, see the section entitled: “Control settings”, on page 11.

By enabling the 12V on/off control option, the HDS4x2 will turn itself on whenever the voltage going into the

IR-IN jack goes from low to high, and it will turn itself off whenever the voltage goes from high to low.

The HDS4x2 only looks at transitions on the IR-IN jack. For instance if it detects a low to high transition it will

turn itself on. The user can then use the power toggle button to turn off the HDS4x2. After which the voltage

on the IR-IN jack would have to go from high to low and then back to high, to once again turn on the HDS4x2.

The 12V on/off control option uses a standard 1/8” (3.5mm) mini-plug:

SLEEVE

TIP

The IR-IN jack is opto-isolated and non-polarized. It does not matter which way you connect your source

across the tip and sleeve of the connector. Neither side of the IR-IN is grounded, and either the tip or the

sleeve can be connected to ground without the possibility of ground loops.

The voltage level is non-polarized and opto-isolated. It doesn't matter which way you connect your voltage

source across the tip and sleeve of the connector. Neither side of the IR-IN is grounded, and either the tip or

the sleeve can be connected to ground without the possibility of ground loops.

A HIGH level is any voltage from +3V to +15V, or any voltage from -3V to -15V.

A LOW level is any voltage between -0.2V and +0.2V.

All levels between these levels are undened.

Note: The “12V on/off control” option is mutually exclusive with using the IR-IN jack as a hardwired IR control

jack (they use the same jack!). Only one of these options can be enabled at a time.