Kramer Electronics, Ltd.
Contents Contents 1 2 2.1 2.2 3 4 5 5.1 6 6.1 6.
Introduction 1 Introduction Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been providing a world of unique, creative, and affordable solutions to the vast range of problems that confront the video, audio, presentation, and broadcasting professional on a daily basis. In recent years, we have redesigned and upgraded most of our line, making the best even better! Our 1,000-plus different models now appear in 11 groups 1 that are clearly defined by function.
Getting Started landfill or incineration by requiring it to be collected and recycled. To comply with the WEEE Directive, Kramer Electronics has made arrangements with the European Advanced Recycling Network (EARN) and will cover any costs of treatment, recycling and recovery of waste Kramer Electronics branded equipment on arrival at the EARN facility. For details of Kramer’s recycling arrangements in your particular country go to our recycling pages at http://www.kramerelectronics.com/support/recycling/.
Overview 3 Overview The Kramer 900xl is a high-performance power amplifier for line-level stereo audio signals. It accepts either a stereo audio signal on an RCA connector or a stereo audio signal on a 3.5mm mini jack. It delivers a speaker output of 10 watts RMS per channel into a 4Ω load on a 10A 4-pin terminal block connector.
Your 900xl Power Amplifier 4 Your 900xl Power Amplifier Figure 1, Figure 2, Table 1, and Table 2 define the unit. Figure 1: 900xl Power Amplifier – Top, Front, and Rear Views Table 1: 900xl Power Amplifier Front, and Rear Functions # 1 2 3 4 5 6 7 8 9 10 11 12 4 Feature 12V DC Connector RS-232 Tx Rx G Terminal Block Connector L+ L– R+ R– OUT Terminal Block Connector IN 2 RIGHT RCA Connector IN 2 LEFT RCA Connector IN 1 3.
Your 900xl Power Amplifier Figure 2: 900xl Power Amplifier – Underside View Table 2: 900xl Power Amplifier Underside Functions # 1 2 Feature LEVEL L/H Switch PROG ON Switch Function Input level – low / high gain; set to low in case of distortion For use when upgrading device firmware 5
Connecting the 900xl Power Amplifier 5 Connecting the 900xl Power Amplifier To connect the 900xl, as illustrated in Figure 3, perform the following: 1. Connect an unbalanced stereo audio source (for example, a computer audio line out) to the IN 1 mini jack connector. 2. Connect an unbalanced stereo audio source (for example, an unbalanced stereo audio player) to the LEFT and RIGHT IN 2 RCA connectors. 3.
Operating the 900xl Power Amplifier 5.1 Connecting a PC You can control the 900xl with a PC (or other controllers) via the RS-232 port using serial commands.
Technical Specifications 6.2 Using Serial Commands To operate your device using serial commands, you need to install Kramer's control software 1. For an explanation of all control commands, see sections 8 and 9. 7 Technical Specifications 900xl technical specifications are shown in Table 3: Table 3: 900xl Technical Specifications 2 INPUTS: 1 unbalanced stereo audio on a 3.
Hex Table 8 Hex Table Table 4 lists the Hex values (described in section 9) for the 900xl: Table 4: 900xl Hex Table Instruction # Hex Code 2. Switch Audio Description 02 81 81 81 Connect Input 1 to output 02 82 81 81 Connect Input 2 to output Output 1 22. Gain Control 16 81 80 81 Mute 16 81 81 81 16 81 82 81 … … 24.
Kramer Protocol 2000 1st BYTE: Bit 7 – Defined as 0. D – “DESTINATION”: 0 - for sending information to the switchers (from the PC); 1 - for sending to the PC (from the switcher). N5…N0 – “INSTRUCTION” The function to be performed by the switcher(s) is defined by the INSTRUCTION (6 bits). Also, if a function is performed via the machine’s keyboard, then these bits are set with the INSTRUCTION NO. that was performed. The instruction codes are defined according to the table below (INSTRUCTION NO.
Kramer Protocol 2000 NOTES on the above table: NOTE 1 – When the master switcher is reset, (e.g. when it is turned on), the reset code is sent to the PC. If this code is sent to the switchers, it will reset according to the present power-down settings. NOTE 2 – These are bi-directional definitions. That is, if the switcher receives the code, it will perform the instruction; and if the instruction is performed (due to a keystroke operation on the front panel), then these codes are sent.
For the latest information on our products and a list of Kramer distributors, visit our Web site: www.kramerelectronics.com where updates to this user manual may be found. We welcome your questions, comments and feedback. Safety Warning: Disconnect the unit from the power supply before opening/servicing. Caution P/N: 2900- 000344 Rev: 5 Kramer Electronics, Ltd. Web site: www.kramerelectronics.com E-mail: info@kramerel.
