Page 3 - Contents; Introduction; Figures
VA-4 – Contents i Contents 1 Introduction 1 2 Getting Started 2 2.1 Achieving the Best Performance 2 2.2 Safety Instructions 2 2.3 Recycling Kramer Products 3 3 Overview 4 3.1 Defining the VA-4 Dual Channel Balanced Stereo Audio Amplifier 4 4 Connecting the VA-4 7 4.1 Connecting to the VA-4 via RS-2...
Page 4 - Congratulations on purchasing your Kramer
VA-4 - Introduction 1 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 video, audio, presentation, and broadcasting professionals on a daily basis. In rece...
Page 5 - Getting Started; Achieving the Best Performance
2 VA-4 - Getting Started 2 Getting Started We recommend that you: • Unpack the equipment carefully and save the original box and packaging materials for possible future shipment • Review the contents of this user manual • Use Kramer high performance high resolution cables Go t
Page 6 - Recycling Kramer Products
VA-4 - Getting Started 3 2.3 Recycling Kramer Products The Waste Electrical and Electronic Equipment (WEEE) 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 Ele...
Page 7 - Overview; The; Defining the VA-4 Dual Channel Balanced Stereo Audio; This section defines the
4 VA-4 - Overview 3 Overview The VA−4 is a volume controller for two channels of balanced stereo audio signals on XLR connectors. The volume of each stereo channel can be adjusted independently of the other stereo channel. The VA-4 : • Features a digitally controlled volume control function • Uses h...
Page 10 - Connecting the VA-4; Figure 3
VA-4 - Connecting the VA-4 7 4 Connecting the VA-4 Always switch off the power to each device before connecting it to your VA-4 . After connecting your VA-4 , connect its power and then switch on the power to each device. To connect the VA-4 as illustrated in the example in Figure 3 : 1. Connect a b...
Page 11 - Method A; Figure 4
8 VA-4 - Connecting the VA-4 Figure 3: Connecting the VA-4 Dual Channel Balanced Stereo Audio Amplifier 4.1 Connecting to the VA-4 via RS-232 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 res...
Page 12 - Method B; Figure 5; PC; to PC
VA-4 - Connecting the VA-4 9 Figure 4: Crossed Cable RS-232 Connection Hardware flow control is not required for this unit. In the rare case where a controller requires hardware flow control, short pin 1 to 7 and 8, and pin 4 to 6 on the controller side. Method B ( Figure 5 )—Connect the RS-232 9-pi...
Page 13 - Technical Specifications
10 VA-4 - Technical Specifications 5 Technical Specifications INPUTS: 2 balanced stereo, up to 16dBm/33kΩ on female XLR connectors OUTPUTS: 2 balanced stereo, up to 21dBm/50Ω on male XLR connectors BANDWIDTH (-3dB): >100 kHz S/N RATIO: 80dB@6dB Gain (unweighted) CROSSTALK (all hostile): 74dB@1kHz...