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VA-8xl - Operating the VA-8xl 

 

Operating the VA-8xl  

When switching on the 

VA-8xl

 (after a previous session), the

 

VA-8xl

 briefly scans 

each channel (stored in the non-volatile memory), showing the settings in the LED 
displays. After that, the 

VA-8xl

 goes to channel 1, and shows its gain/attenuation 

level in dB. 

During regular work, the 

VA-8xl

 shows the status of the last channel you observed 

and/or changed. 

To observe the status of a channel: 

 

Press a CHANNEL SELECTOR button. 
That CHANNEL SELECTOR button illuminates for about 20 
seconds and the

 

decibel values of the selected channel appear in 

the dimmed LED displays 

When the LEDs are dimmed, you cannot change the gain or attenuation - the values 

are for observation only 

You can control the amplifier gain of the left and right channels via the front panel 
buttons, or remotely via RS-232 or RS-485. You can increase or decrease the gain 
in increments of 0.5dB from -95dB up to +31dB. 

You can control the amplifier gain of the left and/or right channels separately or 
together (see 

Section  5.1

). 

5.1 

Adjusting the Gain/Attenuation of the Channels 

To adjust the amplifier gain or the attenuation: 

1.  Press the appropriate CHANNEL SELECTOR button. 

That CHANNEL SELECTOR button illuminates and the

 

decibel values of the 

selected channel appear in the dimmed LED displays (stored in the 
non-volatile memory). 

(When the LEDs are dimmed, you cannot change the gain or attenuation - the values 

are for observation only). 

2.  Press the LEFT LEVEL and/or the RIGHT LEVEL button. 

The

 

decibel values of the selected channel appear in the bright LEFT and/or 

RIGHT LED display. 

Содержание VA-8XL

Страница 1: ...KRAMER ELECTRONICS LTD USER MANUAL MODEL VA 8xl 8 Channel Balanced Stereo Audio Amplifier P N 2900 300151 Rev 1...

Страница 2: ......

Страница 3: ...fication Gain Control 28 10 3 Channel Number Codes 28 Figures Figure 1 VA 8xl 8 Channel Balanced Stereo Audio Amplifier Front Panel 4 Figure 2 VA 8xl 8 Channel Balanced Stereo Audio Amplifier Rear Pan...

Страница 4: ...are clearly defined by function GROUP 1 Distribution Amplifiers GROUP 2 Switchers and Matrix Switchers GROUP 3 Control Systems GROUP 4 Format Standards Converters GROUP 5 Range Extenders and Repeater...

Страница 5: ...com to check for up to date user manuals application programs and to check if firmware upgrades are available where appropriate 2 1 Achieving the Best Performance To achieve the best performance Use...

Страница 6: ...ns 8 independent channels Control of the amplifier gain of the left and right channels together or separately via the front panel buttons or remotely via RS 232 or RS 485 Daisy chaining of up to 15 ma...

Страница 7: ...Buttons DOWN a Decreases the volume in increments of 0 5dB from 95dB to 31dB gain b Stores the current setting in the non volatile memory 4 LEFT Selects deselects the left channel 5 UP a Increases the...

Страница 8: ...s from 1 to 8 10 OUT Terminal Block Connectors Connect to audio acceptors from 1 to 8 11 RS 485 Detachable Terminal Block Port Pin 1 is for Ground Pin 2 is for Pin 3 is for 12 RS 232 9 pin D sub Port...

Страница 9: ...lanced stereo audio sources for example a tape deck to INPUT CHANNEL 1 8 via terminal block connectors You do not have to connect all channels 2 Using the appropriate wiring shown in the figures below...

Страница 10: ...VA 8xl Connecting the VA 8xl 7 Figure 6 Connecting the VA 8xl 8 Channel Balanced Stereo Audio Amplifier...

Страница 11: ...for observation only You can control the amplifier gain of the left and right channels via the front panel buttons or remotely via RS 232 or RS 485 You can increase or decrease the gain in increments...

Страница 12: ...the selected channel that appears in the dimmed LED displays and each setting includes all 8 channels To store a setting via the front panel buttons 1 When the LED displays are dimmed press the DOWN...

Страница 13: ...and the number of that CHANNEL SELECTOR button appears in the RIGHT LED display 3 Press the same CHANNEL SELECTOR button again The memory recalls the setup As confirmation for a few seconds YES appear...

Страница 14: ...You can connect to the unit via a crossed RS 232 connection using for example a PC A crossed cable or null modem is required as shown in method A and B respectively If a shielded cable is used connect...

Страница 15: ...pins or all 9 pins Figure 8 Straight Cable RS 232 Connection with a Null Modem Adapter 6 2 1 DIP Switch Settings Configure the VA 8xl by setting the DIP switches as defined in Figure 9 Figure 9 Rear P...

Страница 16: ...ON 12 OFF OFF ON ON 13 ON OFF ON ON 14 OFF ON ON ON 15 ON ON ON ON 6 3 Configuring up to a 120 Channel Balanced Stereo Audio Amplifier To connect up to 15 VA 8xl units do the following Connect the ba...

Страница 17: ...the VA 8xl units using the specially prepared RS 232 cable see Section 6 3 2 or Connect a PC or other controller to the RS 232 in 9 pin D sub F port on a Kramer Tools VP 43xl Interface Converter and...

Страница 18: ...B to another RS 232 9 pin D sub M connector C by connecting PIN 5 to PIN 5 PIN 8 to PIN 3 PIN 9 to PIN 2 5 Connect the RS 232 9 pin D sub M connector B to the RS 232 9 pin D sub F port on the first V...

Страница 19: ...PIN on the first VA 8xl unit to the PIN on the second VA 8xl unit 3 If shielded cable is used for an RS 485 connection connect the shield to the Ground PIN Figure 12 illustrates the RS 485 line that c...

Страница 20: ...VA 8xl Controlling the VA 8xl 17 Figure 12 An RS 485 Control Interface Setup...

Страница 21: ...Technical Support section 2 Extract the file FLIP_Va8xl zip to a folder for example C Program Files Kramer Flash 7 2 Connecting the PC to the RS 232 Port Before installing the latest Kramer firmware v...

Страница 22: ...displays may show erratic data which should be ignored 7 3 Upgrading Firmware Follow these steps to upgrade the firmware 1 Double click the desktop icon Shortcut to FLIP EXE The Splash screen appears...

Страница 23: ...e File menu or press the keys Alt FR The Open Configuration File window appears Figure 15 Open Configuration File Select Window 4 Choose the file Va8xl cfg by double clicking it If COM 2 was not selec...

Страница 24: ...ommand from the Settings menu or press the keys Alt SCR The RS232 window appears Change the COM port Figure 17 RS 232 Window 6 Click Connect In the Atmel Flip window in the Operations Flow column the...

Страница 25: ...operation is completed the check box for that stage becomes colored green see also the blue progress indicator on the status bar When the operation is completed all 4 check boxes will be colored gree...

Страница 26: ...window 9 Turn the POWER switch on the VA 8xl OFF 10 Disconnect the RS 232 9 pin D sub rear panel port on the VA 8xl unit from the null modem adapter 11 Set DIP 7 OFF 12 Set DIP 8 OFF 13 Turn the POWER...

Страница 27: ...GAIN 0dB THD NOISE 0 006 4dBu 1kHz CONTROLS Front pushbuttons RS 232 and RS 485 INDICATORS Gain in dB for left and right channels OPERATING TEMPERATURE 0 to 55 C 32 to 131 F STORAGE TEMPERATURE 45 to...

Страница 28: ...ion Parameters RS 232 Protocol 2000 Baud Rate 9600 Data Bits 8 Stop Bits 1 Parity None Command Format HEX Example Output 1 to Input 1 0x01 0x81 0x81 0x81 Ethernet IP Address 192 168 1 39 TCP Port Numb...

Страница 29: ...lt data rate is 9600 baud with no parity 8 data bits and 1 stop bit All the values in the table are decimal unless otherwise stated INSTRUCTION DESCRIPTION 3rd BYTE 22dec 16hex SET AUDIO GAIN Set 7 LS...

Страница 30: ...16 XX 95 81 57 5 57 5 16 XX CD 81 29 5 29 5 16 XX 85 A1 85 85 16 XX 96 81 57 57 16 XX CE 81 29 29 16 XX 86 A1 84 5 84 5 16 XX 97 81 56 5 56 5 16 XX CF 81 28 5 28 5 16 XX 87 A1 84 84 16 XX 98 81 56 56...

Страница 31: ...A1 23 23 16 XX EE A1 1 5 1 5 16 XX C3 A1 12 5 12 5 16 XX D9 A1 23 5 23 5 16 XX EF A1 2 2 16 XX C4 A1 13 13 16 XX DA A1 24 24 16 XX F0 A1 2 5 2 5 16 XX C5 A1 13 5 13 5 16 XX DB A1 24 5 24 5 16 XX F1 A1...

Страница 32: ...VA 8xl Kramer Protocol 2000 29...

Страница 33: ...P N 2900 300151 Rev 1...

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