Kramer 908, User Manual

Page 1: ...KRAMER ELECTRONICS LTD USER MANUAL MODEL 908 40W per Channel Stereo Audio Amplifier P N 2900 000537 Rev 6 ...

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Page 3: ...mands 21 9 3 Device Initiated Messages 21 9 4 Result and Error Codes 21 9 5 Basic Routing Commands 22 9 6 Audio Parameters Commands 22 9 7 Identification Commands 23 9 8 Network Setting Commands 24 9 9 Machine Information Commands 24 9 10 Protocol 3000 Syntax 25 Figures Figure 1 908 40W per Channel Stereo Audio Amplifier 5 Figure 2 Connecting the 908 40W per Channel Stereo Audio Amplifier 8 Figure...

Page 4: ...ined by function GROUP 1 Distribution Amplifiers GROUP 2 Switchers and Routers GROUP 3 Control Systems GROUP 4 Format Standards Converters GROUP 5 Range Extenders and Repeaters GROUP 6 Specialty AV Products GROUP 7 Scan Converters and Scalers GROUP 8 Cables and Connectors GROUP 9 Room Connectivity GROUP 10 Accessories and Rack Adapters and GROUP 11 Sierra Products Congratulations on purchasing you...

Page 5: ...ormance Use only good quality connection cables we recommend Kramer high performance high resolution cables to avoid interference deterioration in signal quality due to poor matching and elevated noise levels often associated with low quality cables Do not secure the cables in tight bundles or roll the slack into tight coils Avoid interference from neighboring electrical appliances that may advers...

Page 6: ...EEE Directive 2002 96 EC aims to reduce the amount of WEEE sent for disposal to 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 ...

Page 7: ...dio output levels for loudness bass middle treble balance and the volume A USB connector for firmware upgrade RS 232 and Ethernet ports A 10V control port for adjusting the audio gain via an external connector for example the Kramer RC 63A The 908 can be controlled Directly via the front panel push buttons and adjustment knob By RS 232 serial commands transmitted by a touch screen system PC or oth...

Page 8: ...le the Kramer RC 63A to adjust the volume via the controller 5 RS 232 G Tx Rx Terminal Block Connector Control connector 6 ETHERNET Port Connects to your LAN 7 FACTORY RESET Button Press to return the device to its factory default settings 8 PROGRAM Switch Switch down before performing a firmware upgrade leave up the default for normal operation 9 24V DC Connector 24V DC for powering the unit 10 I...

Page 9: ...ent adjust with the level knob 18 BALANCE Button Press to select the balance between right and left speakers adjust with the level knob 19 VOLUME Button Press to select the volume adjustment adjust with the level knob 20 Level Adjustment Knob Increase and decrease the level of the previously selected function Press and hold to disable local volume control and enable remote volume control Press and...

Page 10: ...ample the balanced stereo audio output of a DVD player to the INPUT 2 terminal block connector 3 Connect the OUTPUT terminal block to a pair of loudspeakers Connect the L and the L terminal block connectors to the left loudspeaker and the R and the R terminal block connectors to the right loudspeaker Do not ground the loudspeakers 4 Connect the 24V DC power adapter to the power socket and connect ...

Page 11: ...utput This section illustrates how to wire A balanced stereo audio connection see Figure 3 An unbalanced stereo audio input connection see Figure 4 An unbalanced stereo audio output connection see Figure 5 Figure 3 Balanced Stereo Audio Connection Figure 4 Unbalanced Stereo Audio Input Connection Figure 5 Unbalanced Stereo Audio Output Connection ...

Page 12: ... 63A as illustrated in Figure 6 Figure 6 Connecting the 10V VOL Terminal Block Connector 4 3 Connecting a PC via RS 232 You can connect a PC or other controller to the 908 via the RS 232 terminal block connector To connect a PC to a 908 unit connect the RS 232 terminal block connector on the 908 unit to the RS 232 9 pin D sub port on your PC see Figure 7 Figure 7 Connecting to a PC ...

Page 13: ... Ethernet port of a PC use a crossover cable with RJ 45 connectors If you are connecting the 908 directly to your computer not through the network you may need to reconfigure the PC network settings To reconfigure the PC network settings 1 Navigate to Start Settings Network Connections 2 Click on the appropriate Local Area Connection 3 Right click the Local Area Connection and click Properties The...

Page 14: ...k Properties The Internet Protocol TCP IP Properties Window appears Figure 9 Internet Protocol TCP IP Properties Window 5 Click Use the following IP address and enter the IP address and Subnet mask shown above Click OK and OK to close both windows and save the settings ...

Page 15: ...ing the MUTE button To adjust the sound of the output signal 1 Press the sound component that you want to adjust LOUD BASS MID TREBLE BAL or VOLUME The button illuminates 2 Turn the adjustment knob to adjust the setting Note To enable remote volume control via the 10V VOL connector using for example the Kramer RC 63A you must disable the local digital volume control by pressing and holding the VOL...

Page 16: ...ion 5 3 To be able to do so you must use a supported Web browser Microsoft V6 0 and higher Chrome or Firefox V3 0 and higher To check that Java is installed correctly and running browse to http www java com en download help testvm xml This page runs a test and displays a Java success see Figure 10 or failure message Figure 10 Java Test Page Success Message If you do not see the success message fol...

Page 17: ... are using DHCP you must enter the name The default IP number is 192 168 1 39 and may be changed by the system integrator Figure 11 Entering the IP Number in the Address Bar The following window appears Figure 12 Loading the Embedded Web Server 3 Check that Java and JavaScript is enabled in your browser The following window appears ...

Page 18: ...igure 14 The 908 Control Window 5 To choose the desired input click on Input 1 or Input 2 see Figure 15 Each input has its own set of audio adjustments 6 To adjust each function click and hold each slider and drag to the right to increase or to the left to decrease the shown value 7 To mute the output check the Mute box ...

Page 19: ...rnet settings click the Settings tab at the top of the Control Window The Ethernet settings display see Figure 16 Figure 16 Ethernet Settings 9 Make any necessary changes and click Save to save the settings 10 To return to the Control Window click 908 under the Kramer logo ...

Page 20: ...ntroller to make some of the adjustments that are made using the front panel buttons Loudness bass mid treble and balance adjustments are not adjustable using the IR remote To choose an input press button 1 or 2 To toggle muting press the OFF button To increase the volume press To decrease the volume press ...

Page 21: ...evice microcontroller that runs firmware located in FLASH memory If required you can download and upgrade to the latest version of firmware Download from the Kramer Web site www kramerelectronics com The firmware is installed using the P3K software that is also available from the Kramer Web site ...

Page 22: ... Electronics products RS 232 Protocol 3000 Default Baud Rate 115 200 Data Bits 8 Stop Bits 1 Parity None Command Format ASCII Ethernet Factory Default Values IP Address 192 168 1 39 Mask 255 255 255 0 Gateway 192 168 1 1 Power cycle the unit while pressing the Factory Reset button located on the rear panel of the unit TCP Port 5000 UDP Port 50000 ...

Page 23: ... bass 15dB to 12dB 100Hz mid 15dB to 11dB 1kHz treble 14dB to 13dB 10kHz input selector buttons mute button loudness bass mid treble balance volume buttons IR RS 232 Ethernet 10V volume control COUPLING Input AC output DC AUDIO THD NOISE 0 15 AUDIO 2nd HARMONIC 0 06 SIGNAL NOISE RATIO 63dB 80dB 10 distortion AMPLIFIER TYPE Class D POWER CONSUMPTION 24V DC 2A OPERATING TEMPERATURE 0 to 40 C 32 to 1...

Page 24: ...Following are the specific commands that the room controller RC device sends to the 908 to operate the external devices 9 2 Help Commands Command Syntax Response Protocol handshaking CR OKCRLF 9 3 Device Initiated Messages Command Syntax Start message Kramer Electronics LTD Device Model Version Software Version Switcher actions Audio channel has switched breakaway mode AUD IN OUT 9 4 Result and Er...

Page 25: ... audio level in specific amplifier stage AUD LVL STAGE CHANNEL VOLUME Short form ADL STAGE CHANNEL VOLUME AUD LVL STAGE CHANNEL VOLUME RESULT Read audio volume level AUD LVL STAGE CHANNEL Short form ADL STAGE AUD LVL STAGE CHANNEL VOLUME Advanced commands for controlling each stage of audio amplification Set audio bass level BASS CHANNEL BASS Short form ADB CHANNEL BASS BASS CHANNEL BASS RESULT Re...

Page 26: ...ncrease current value decrease current value 9 7 Identification Commands Command Syntax Response Protocol handshaking CR OK CRLF Read device model MODEL MODEL MACHINE_MODEL Read device serial number SN SN SERIAL_NUMBER Read device firmware version VERSION VERSION MAJOR MINOR BUILD REVISION Set machine name NAME MACHINE_NAME NAME MACHINE_NAME RESULT Read machine name NAME NAME MACHINE_NAME Reset ma...

Page 27: ...r IP set command 1 Try to use DHCP if unavailable use IP as above Change protocol Ethernet port ETH PORT PROTOCOL PORT Short form ETHP ETH PORT PROTOCOL PORT RESULT Read protocol Ethernet port ETH PORT PROTOCOL Short form ETHP ETH PORT PROTOCOL PORT PROTOCOL TCP UDP transport layer protocol PORT Ethernet port that accepts Protocol 3000 commands 1 65535 User defined port 0 Reset port to factory def...

Page 28: ...0 Protocol 3000 Syntax Protocol 3000 is used to control the 908 via an RS 232 connection using a PC touch screen other serial controller or RC type controller 9 10 1 Host Message Format Start Address optional Body Delimiter Destination_id Message CR 9 10 2 Simple Command Command string with only one command without addressing Start Body Delimiter Command SP Parameter_1 Parameter_2 CR 9 10 3 Comman...

Page 29: ...A Z a z and some special characters for specific commands Parameters are separated by commas Message string Every command entered as part of a message string begins with a message starting character and ends with a message closing character Note A string can contain more than one command Commands are separated by a pipe character Message starting character For host command query For machine respon...

Page 30: ...ds sent from some non Kramer controllers like Crestron some characters require special coding such as X Refer to the controller manual 9 10 8 Command Forms Some commands have short name syntax in addition to long name syntax to allow faster typing The response is always in long syntax 9 10 9 Command Chaining Multiple commands can be chained in the same string Each command is delimited by a pipe ch...

Page 31: ...28 908 908 Commands in Protocol 3000 ...

Page 32: ...isit our Web site where updates to this user manual may be found We welcome your questions comments and feedback Web site www kramerelectronics com E mail info kramerel com P N 2900 000537 Rev 6 SAFETY WARNING Disconnect the unit from the power supply before opening and servicing ...