Advertisement
Remote Interface Kit (Biamp #909-0041-00): The Remote Interface Kit allows the user to create a customized control panel, using his
own switches, enclosure, and panel. It can provide up to 40 buttons (12 more than standard remote controls), which are support by some
®
other ADVANTAGE
products. The VSX41 itself only supports 4 buttons (Channel Select), but it will also pass commands on to other
Advantage products which have been connected to the Remote Output (see Applications on page 7). The Remote Interface Kit is a tested
circuit board assembly, which includes two wiring harnesses. The circuit board connects to the VSX41 in exactly the same way the
External Infrared Receiver does, using 2-conductor shielded cable (not included), and may be wired up to 2000 feet from the VSX41. The
three screw terminals on the circuit board ("GND", "IR2", & "IR3") directly correspond to the Remote 1 & Remote 2 terminals on the rear
panel of the VSX41. Connect the cable shield to the "GND" terminal at each end. Use the two conductors to connect "IR2" to "IR2" and
"IR3" to "IR3". When the VSX41 is turned on, power is delivered to the circuit board. The circuit board is 2.27"W by 2.65"H, with four
mounting holes (2" centers) and #6 mounting hardware provided. Complete instructions are included with the Remote Interface Kit.
Logic Inputs: The 9-pin Subminiature D (female) connector on the rear panel of the VSX41 provides four logic inputs and their related
ground. Logic Inputs allow remote control of the VSX41 Channel Select switching function via external logic output circuits, contact
closures, or active driver circuits. When nothing is connected to a Logic Input, an internal pull-up resistor keeps it at a "high" idle state.
The Logic Input is activated when its input goes "low" (less than +2VDC). A Logic Input is controlled in one of three ways: 1) Use an NPN
style "open collector" logic output from an external device (such as an ADVANTAGE AGII or DRC4+4) to short the Logic Input to ground.
2) Use a switch, relay, or other contact closure (such as from a third-party controller) to short the Logic Input to ground. 3) Use an active
TTL or RS-232 output driver circuit (such as from a third-party controller) to actively drive the Logic Input to a "high" or "low" state. Multiple
logic outputs or contact closures may be wired in parallel to a single Logic Input. Logic outputs and contact closures should be rated for at
least 5 Volt / 1 mA operation. Low-current / dry-contact closures are recommended for reliability. Active output driver circuits should not
exceed a signal range of -15VDC to +15VDC, and should have a minimum pulse width of 50 milli-seconds. Logic Input impedances are
approximately 1k ohms for negative voltages, and approximately 10k ohms for positive voltages. Maximum recommended cable length for
Logic Inputs is 10 feet. The VSX41 Logic Inputs include a "priority switching" scheme (Logic Input 1 overrides Logic Inputs 2~4, Logic
Input 2 overrides Logic Inputs 3 & 4, and Logic Input 3 overrides Logic Input 4). For example, if Logic Input 2 is turned on (Channel 2
selected) and then Logic Input 1 is also turned on, the VSX41 will switch to Channel 1. However, if Logic Input 2 is turned on (Channel 2
selected) and then Logic Input 3 is also turned on, the VSX41 will not switch channels. This "priority switching" also helps limit the amount
of unnecessary switching in video-follow-audio applications. Logic Input #4 may be hard-wired to ground, designating Input 4 as the
default when no other input is selected (see Applications on page 8). The Logic Input "priority switching" scheme will be overridden by
commands received from other remote controls. When controlling the VSX41 via logic outputs from an AGII or DRC4+4, internal jumper
straps are provided which assign the VSX41 Logic Inputs to the corresponding pins for those products (see Options on page 6). From the
factory, Logic Inputs 1~4 are assigned to pins 1~4, with pin 5 being ground.
Third-Party Controllers: The VSX41 may be remotely controlled by third-party controllers in three ways: 1) Connect "carrier stripped"
remote control signals to the VSX41 Remote Translator (see Rear Panel on page 3). 2) Connect contact closures, logic output circuits, or
active TTL / RS-232 driver circuits to the VSX41 Logic Inputs (see Logic Inputs above). 3) Apply "infrared transmitter" signals to the
VSX41 Internal or External Infrared Receivers. The third-party controller must be programmed to output a bitstream in the Biamp format
(contact the controller manufacturer to determine if their device driver library currently supports the Biamp format).
REMOTE CONTROL
5
4
3
2
1
9
8
7
6
logic inputs
5
Advertisement
