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Eleven Engineering SP-205, Operating Instructions, Page: 3 / 4

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Eleven Engineering SP-205 Operating Instructions Download Page 3

4. Audio Test Method and Specifications

A. Test Method

Power Required 

6V DC 400mA (one for Tx, one for Rx)

Rx Resistive Load 

10 KΩ

Audio Analyzer Filters 

AES17 LPF “IN” unless otherwise specified

Tx Input Conditions 

997Hz @ -3.5 dBV = Full Scale Input

Rx Output Level 

Maximum * (Set by Volume Control)

Distance Apart 

No closer than ~1 m **

Notes 

• Nodes should be tested on ESD safe surfaces and ideally elevated above surface on ESD safe mounts.
• Cables should be as far away as possible from equipment that can introduce noise into nodes. (i.e. CRT monitors, AC 
Transformers, etc )
• Batteries can be used to eliminate 50/60Hz noise.

• The antenna orientation shown is for audio testing.  A different antenna orientation may be better suited for maximum RF range 
performance.

* Evaluation Kits are shipped with output level set to MAX.
** To avoid RF swamping.

SP

SP-205 Evaluation Kit Operating Instructions

DO4611

www.ElevenEngineering.com 

   

SP-205 Evaluation Kit Instructions 

 

         DO4611| 

2009.11.05

Page 3/4

Summary of Contents for SP-205

Page 1: ...vel may be lower than desired 3 Evaluation Kit Features The SP 205 system comes preloaded with firmware This firmware implements a number of useful user interface features such as LED blinking and push button volume control This section provides a brief summary of some commonly used features of the firmware A Bond LED The Bond LED displays the bond status between the Tx node and the Rx nodes as fo...

Page 2: ...o systems can be optimally configured together to operate in the same area with minimal interference by connecting the Rx nodes together via a sync wire This wire will synchronize the Rx nodes when in close proximity to effectively combine each separate Rx node into one cohesive central hub for all SP wireless instruments on stage Maximum number of systems in an area 8 a Photo of sync wire setup b...

Page 3: ...lly elevated above surface on ESD safe mounts Cables should be as far away as possible from equipment that can introduce noise into nodes i e CRT monitors AC Transformers etc Batteries can be used to eliminate 50 60Hz noise The antenna orientation shown is for audio testing A different antenna orientation may be better suited for maximum RF range performance Evaluation Kits are shipped with output...

Page 4: ...of the RF can cause interference Obstacles such as the tester s body walls and cubicles can affect the range wherever possible keep node antennas in line of sight Other RF devices operating in the 2 4GHz spectrum can affect the RF performance such as microwaves wireless routers and other equipment sharing the 2 4GHz band Range stated is as measured in Eleven Office Space at 9 1ms latency B RF Char...

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