AMX SBC Quick Start Manual

Overview

Preset Single Bus Controllers (SBCs) are control devices programmed as channel-
selector devices for a specific preset. Preset SBCs can be configured to execute
global presets or to execute local presets on a particular virtual matrix. (Preset SBCs
cannot be programmed to act as a standard channel selector device to a specific
output, nor can standard SBCs act as Preset SBCs.) Preset SBCs are available in
2-digit and 3-digit 12-key models and are compatible with any AMX AutoPatch
Distribution Matrix with an XNNet compatible interface.
FIG. 1 2-digit & 3-digit Preset Single Bus Controllers (SBCs) with bezel – front view

General Specifications

Specifications
Cable for Two-conductor, 20 AWG, 7/28 strand cable with drain wire or
XNNet Communications shield (such as Alpha 2412C)
Distance 1000 ft. (304.8 m) total, including linked Preset SBCs
Power +9 VDC @ 120 mA
Operational Temperature 32° - 110° F (0° - 43° C)
Humidity 0 to 90% non-condensing
Dimensions 2.25 in. x 4 in. (5.72 cm x 10.16 cm)
Bezel dimensions: 3 in. x 4.75 in. (7.62 cm x 12.07 cm)
Display Two-digit or three-digit seven-segment LED displays current
preset selected for routing

Installation

ESD Warning: Avoid ESD (Electrostatic Discharge) damage to sensitive
components; be sure you and the equipment are properly grounded before
touching any internal materials.
This guide provides instructions for a typical installation using a single-gang box. For
other installations, see Steps 9 through 11 in right column before mounting the Preset
SBC.
Important: If installing multiple Preset SBCs, see the section on linking (on reverse)
before mounting Preset SBCs in boxes.
Mounting & Wiring the Preset SBC

Power Requirements

• +9 VDC @ 120 mA per Preset SBC
• Always use a UL approved power source. Check the power source's
documentation for information specific to that power source.

Link Cable Requirements

• Two-conductor, 20 AWG, 7/28 strand cable with a drain wire or shield, such as
Alpha 2412C (customer supplied)
• Maximum length of cable: 1,000 ft. (304.8 m) total, including linked SBCs
To mount in a single-gang box:
1. Install a single gang box in the desired location.
2. Attach link cable to enclosure's XNNet connector (on the enclosure's CPU). For
exact location of CPU and instructions for attaching a link cable, see router
documentation.
3. Route the link cable from the enclosure through the holes in the single gang box.
4. Attach power cable wires to the power source.
5. Route power cable from power source through holes in the single gang box.
FIG. 2 Route wires through the single-gang box & attach to Preset SBC
AutoPatch Preset Single Bus Controllers
6. Snap the bezel on the Preset SBC.
7. Carefully pierce the two gray circles near the top and bottom of the Preset SBC
faceplate that indicate the mounting holes (if necessary).
8. Align faceplate with the single-gang box. (The unit may need to be tilted slightly
to move the circuit board past the tabs.)
9. Wire the Preset SBC power connector P3.
For the 2-digit SBC, use Steps 9a and 9b.
For the 3-digit SBC, use Steps 9c through 9e.

Wiring the Power Connector (P3)

2-digit Preset SBC
9a. Loosen the left and center screws of
the power connector P3 on the circuit
board on the back of the SBC
(see right).
9b. Insert power cables wires; positive
lead on the left and ground in center.
Tighten screws.
3-digit Preset SBC
9c. Attach a chassis ground wire with a
female quick disconnect to the
.250 x .032 tab. Connect the other end
of the ground wire to a ground point.
9d. Loosen the top and center screws of
the power connector P3 on the circuit
board on the back of the SBC
(see right).
9e. Insert power cable wires; positive lead
on top and ground in the center.
Tighten screws.

Wiring the Link Connector (P4 or P5)

Wire the SBC Link connector, either P4 or P5. Steps 10 and 11 apply to both the 2-digit
and 3-digit SBC.
Power cable
Link cable
FIG. 3
Attach XNNet link cable to P4 or P5
10. Loosen the two outer screws of the link connector (P4 or P5) on the SBC (FIG. 3
left for 2-digit SBC rear; FIG. 3 right for 3-digit SBC).
11. Insert XNNet link cable wires into link connector. Either wire goes into either
outside slot.
Tighten screws.
12. Insert screws through mounting holes on SBC faceplate and holes on single-
gang box (FIG. 2) and tighten.
Quick Start Guide
Power
cable
POS (+)
GND
P4
P5
GND
P3
Chassis
ground
wire
POS (+)
P3
Power
cable
Chassis
ground
wire
Link cable
P4
P5
Power cable