Crestron QM-RMC Control System and Ethernet-to-Serial Interface

Overview

The Crestron QM-RMC is a compact 2-Series control system featuring a built-in Web server and multiple input ports (IR, serial, digital) for controlling AV devices over IP networks. It is designed for facility-wide AV management, offering a cost-effective solution for universities and corporate campuses.

Versatility and Control

As a full-featured 2-Series processor, the QM-RMC provides extensive programming flexibility. It supports standalone local display and device control. Program development is streamlined using Crestron's SIMPL™ Windows software, which includes a comprehensive device database with thousands of IR and serial drivers.

Processing Power and Connectivity

The QM-RMC is powered by a 2-Series processor based on Motorola's ColdFire® technology, featuring 36 MB of onboard memory. Connectivity includes:

Two bi-directional COM ports for RS-232 control.
One IR port compatible with the ST-SPL IR splitter for controlling multiple IR devices.
Four digital input ports for connecting sensors (e.g., room occupancy sensors).
One 10/100BaseT full duplex Ethernet port.

e-Control 2™ XPanel Technology

The QM-RMC includes an onboard Web server with SSL (Secure Sockets Layer) support. Authorized users can access the control system from any LAN, WAN, or the Internet. Custom Web pages can be designed using Crestron Vision Tools Pro-e® and uploaded to the Web server, allowing any authorized computer running Microsoft Internet Explorer to control local AV devices. This technology provides a user interface similar to Crestron TPS touchpanel pages, with robust runtime performance. Standalone XPanel programs can also be launched from Windows desktops or Windows PocketPC 2002 PDA devices.

Network Management and Integration

The QM-RMC supports SNMP (Simple Network Management Protocol), enabling network monitoring through IT management software packages like Hewlett Packard OpenView™. The QM-RMC can generate SNMP traps or event notifications for device status, such as projector status or room occupancy. It also integrates with Crestron RoomView™ Facility Management Software, allowing organizations to monitor multiple room AV controllers on an integrated Ethernet network in real time from any network PC.

Key Features

Low-cost, high-performance control of serial, IR, and Ethernet devices over IP networks.
2-Series processor built on Motorola's 32-bit ColdFire® technology.
Two RS-232 ports for controlling projectors, codecs, and switchers.
One IR/serial port for controlling devices like DVD players, VCRs, and displays.
Four digital input ports, suitable for room occupancy sensors.
One 10/100 Ethernet port.
Built-in Web server for remote Web browser/XPanel control.
DHCP/DNS enabled with SSL (Secure Sockets Layer) for secure connections.
Built-in SNMP, TCP, and UDP support.
VisionTools Pro-e® and SIMPL™ Windows development software for quick GUI and program creation.
Power supply included.

Specifications

Digital Signal Processor

CPU: 32-bit Motorola ColdFire® Microprocessor
Memory: 4MB Flash, 32MB SDRAM, 256KB NVRAM

Connectors

COM: (2) DB9, 2-way RS-232
Digital Inputs: (4) 5-pin mini Phoenix connectors, Schmidt trigger type (nominal 2.5V threshold) with 24V input tolerance.
IR: (1) 2-pin mini Phoenix connector, IR, TTL Level, 1-way RS-232, IR output up to 1.2 MHz.
Ethernet: (1) RJ-45, 10/100BaseT full duplex.
Power: 12VDC power jack (power supply included).

Reset Buttons

HW-R: Hardware reset (reboots the control system).
SW-R: Software reset (reloads the logic program).

LED Indicators

PWR: Green power LED.
ACT: Yellow device communication LED.
COM A/COM B: COM port activity LED.
IR: IR port activity LED.
Input: Active digital input LED.

Power Requirements

6W (0.5A @ 12VDC).
Power supply included.

Dimensions

Height: 1.43 in (3.63 cm).
Width: 4.65 in (11.81 cm).
Depth: 5.24 in (13.30 cm).

Diagram Descriptions

Front Panel

The front panel features a LAN port, COM A, COM B, IR, and INPUT connectors. It also includes status LEDs for PWR (Power), ACT (Activity), COM A/COM B, IR, and Input. Reset buttons labeled HW-R (Hardware Reset) and SW-R (Software Reset) are present. The unit is labeled QM-RMC, and a 12VDC power input jack is visible. Dimensions are indicated as 4.65 inches (11.81 cm) wide and 1.43 inches (3.63 cm) high.

Rear Panel

The rear panel contains connectors for digital inputs (labeled 1234G), an IR/Serial port (labeled IR), and a COM port (labeled COM A/B). The COM port is a DB9 connector for bi-directional RS-232 communication, supporting hardware and software handshaking and modem control. The panel includes a CE marking and the manufacturer's address: CRESTRON ELECTRONICS INC., ROCKLEIGH, NJ 07647 USA.

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