Antex electronic SX-6, SX-34, SX-5e, SX-36 user manual Playback and Record Devices

Page 20

This is because the input amplifier stages of the card have been overloaded. Also, recording from a source with too low a signal level, such as plugging a microphone directly into a line level in- put, will result in a very noisy recording. Good signal to noise performance can only be achieved by using a record source with sufficient signal level to register high on the VU meter. Peaks in the red zone should occur occasionally for best signal to noise ratio.

Connecting the outputs of the Antex Card to equipment designed for a similar signal level is equally important. Turning the play- back slider controls in either the Antex Mixer application or the Antex Demo application way down to compensate for connecting to equipment which should have a much lower signal level will give poor performance. These slider controls operate in the digi- tal domain and reduce the signal level without reducing the noise floor, degrading the signal to noise ratio accordingly. The trim controls on the SX-6 and SX-36 operate in the analog domain, and preserve the signal to noise ratio. It is always better to choose the lower trim setting and turn the sliders up, rather than the other way around.

PLAYBACK AND RECORD DEVICES

A “device” is essentially a .WAV file on a hard drive. It can be ste- reo or mono, at one of many different sample rates or formats. Devices are not to be confused with physical outputs on the Antex card. For example, all cards in this family have dual stereo device playback capability. These means that 2 stereo files may be played back at the same time. However, the Antex sound card has only one stereo physical output. This means that the 2 de- vices are mixed together in the DSP on the card and the mixed signal is sent out the stereo output of the card. Therefore, when playing 2 devices on one card, the 2 files can only be mixed by the Play 1 and Play 2 sliders in the Antex Mixer (or other software which mimics this function). They cannot be mixed using an ex- ternal mixing board. In order to be able to mix 2 files (devices)

15

Image 20
Contents September 17 Rev. E Antex Electronics CorporationTh Street GARDENA, CaliforniaDeclaration of Conformity Table of Contents SX-34 Mixer and Block Diagram SX-6 Mixer and Block Diagram Figures Card Installation IntroductionJumper Settings & Connections SX-5e,6,34,35 & SX-36 Jumper SettingsAddresses and Interrupts Making Connections to the CardPage SX-35/36 Connector Description SX-35/36 ConnectionsLine I/0 JP8 AUX in JP9 MIC JP7SX-34 Connector Description Output Header JP5AUX Header JP6 Microphone Header JP7Mono Header JP4 SX-6 Connector Description SX-6 ConnectionsLine OUT JP2 Microphone Input JP3SX-5e Connector Description Balanced and Unbalanced SignalsImpedance and Signal Levels Playback and Record Devices COMPRESSION, Data RATES, and Networks ISO/MPEG-1 Bitrates 32 KHz 44.1 KHz 48 KHz Driver Installation Windows Setup Tips Upgrade Driver, WINSetup Tips Upgrade Driver, WIN Windows NT Antex Application Software Installation Using Windows Demonstration Software Sample RateCompression Mpeg BitratesWave Device ChannelsVU Meters File Record/StopDual Device Operation VolumeInstalling and Using Multiple Cards in a System Mixer and Block Diagrams SX-36 Mixer and Block Diagram Page Page SX-36 Mixer SX-36 Block Diagram SX-34 Mixer and Block Diagram SX-34 MixerSX-34 Block Diagram SX-6 Mixer and Block Diagram SX-6 Mixer SX-6 Block Diagram SX-5e Mixer and Block Diagram SX-5e MixerPage SX-5e Block Diagram Antex Meter Antex MeterAntex Meter pull-down menu Antex Meter options Page Troubleshooting Files I record sound dull Files recorded are of poor quality There are dropouts or pops and clicksTECHNICAL/ORDERING Information Toll Free 800 Phone 310 FAX 310Terms Connectors for Male HeadersAppendix Page SX-36 SpecificationsAll Cards as applicable SX-34 SX-6SX-5e About Digital AudioPage Analog-to-Digital Digital-to-Analog