Figures

1	Introduction	1
2	Getting Started	2
2.1	Achieving the Best Performance	2
3	Overview	3
3.1	Defining the VA-8xl8-Channel Balanced Stereo Audio Amplifier	3
4	Connecting the VA-8xl	6
5	Operating the VA-8xl	8
5.1	Adjusting the Gain/Attenuation of the Channels	8
5.2	Storing and Recalling Setups	9
6	Controlling the VA-8xl	11
6.1	Controlling a Single VA-8xl Unit	11
6.2	Preparing the RS-232 Port on a Single Unit	11
6.3	Configuring up to a 120 Channel Balanced Stereo Audio Amplifier	13
7	Upgrading the Flash Memory	18
7.1	Downloading from the Internet	18
7.2	Connecting the PC to the RS-232 Port	18
7.3	Upgrading Firmware	19
8	Technical Specifications	24
9	Default Communication Parameters	25
10	Kramer Protocol 2000	26
10.1	Hex Codes for Attenuation Gain Control	27
10.2	Hex Codes for Amplification Gain Control	28
10.3	Channel Number Codes	28

Figure 1: VA-8xl8-Channel Balanced Stereo Audio Amplifier Front Panel	4
Figure 2: VA-8xl8-Channel Balanced Stereo Audio Amplifier Rear Panel	5
Figure 3: Balanced Stereo Audio Connection	6
Figure 4: Unbalanced Stereo Audio Input Connection	6
Figure 5: Unbalanced Stereo Audio Output Connection	6
Figure 6: Connecting the VA-8xl8-Channel Balanced Stereo Audio Amplifier	7
Figure 7: Crossed Cable RS-232 Connection	11
Figure 8: Straight Cable RS-232 Connection with a Null Modem Adapter	12
Figure 9: Rear Panel DIP-switches (Factory Default)	12
Figure 10: Configuring up to 15 VA-8xl Units	14
Figure 11: Preparing the RS-232 Connectors	15
Figure 12: An RS-485 Control Interface Setup	17
Figure 13: Splash Screen	19
Figure 14: Atmel – Flip Window	20
Figure 15: Open Configuration File Select Window	20
Figure 16: Atmel – Flip Window (RS-232 Communication)	21
Figure 17: RS-232 Window	21
Figure 18: Atmel – Flip Window (Connected)	22
Figure 19: Atmel – Flip Window (Operation Completed)	23

VA-8xl – Contents	i