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B. Operating Conditions and Audio Characteristics

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Audio Input Line Level

FSI

VCC=3.3V

 

 

0.668

Vrms

Tx In

 

 

 

 

-3.5

dBV

Audio Output Line Level

FSO = FS

VCC=3.3V

 

 

0.741

Vrms

(Left) Rx Out

 

 

 

 

-2.59

dBV

System Gain FSI to FSO

 

@ 997 Hz

 

0.91

 

dB

SNR A-weighted

SNR

Left CH RE:

 

>92

 

dB FS

SNR un-weighted

 

997 Hz @ FS

 

>90

 

dB FS

THD+N Left Channel

THD+N

997 Hz @ -1 dB FS

 

<0.007

 

%

Audio Bandwidth

BW

±0.5 dB RE: 997 Hz @ FS

20

 

15.5K

Hz

Pass Band Ripple

 

 

<±0.5

 

dB

Bonded Current Draw                  Tx  

 

131

178

229

mA

                                                            Rx      

 

137

158

168

mA

Digital Latency *

t

L

 

9.1

ms

All measurements conducted with AES17 LPF “IN” unless other wise specified.
* Can be customer specified; latency is hard coded in the firmware.

5. RF Test Method and Specifications

A. Test Method

Antenna Orientation 

See above diagram for orientation for maximum RF range 
performance

Indoor Range*

~25 m line of sight

Tx Setup

~1.3 m high, stationary, powered with 6V DC 400mA power 
adaptor

Rx Setup

~1.2 m high, mobile, powered with 4 AA batteries

Office Space

Open design with some cubicles

Office footprint

26 m x 19 m

Notes 

• Antenna orientation is important to overall RF range 
performance. 

 

• Layout of the testing space affects RF performance. 
Reflections 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 Characteristics & Behavior

The following RF characteristics include pertinent information for FCC, ETSI, and 
ARIB STD T-66 regulations for RF devices.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Raw Data Rate

Rdr

 

 

 

1.536

Mbps

Total Channels

CH

 

 

 

38

Ch

Hopping Channels

CHh

 

 

20

 

Ch

TX Output Power

Pout

 

14

15

16

dBm

Antenna Impedance

ZAnt

50

Ω

Frequency Range 

 

 

2.403

 

2.479

GHz

Indoor Range*

Ri

25

m

*Range stated is as measured in Eleven Office space at 9.1ms latency, customer range may vary (see Notes in Section 
5A).

6. Sales and Support

Sales. 

Visit 

www.ElevenEngineering.com/Sales & Support/

 to find an Eleven 

Sales Representative near you, or contact us at 

[email protected]

Technical Support. 

For all product questions and inquiries visit Eleven's online 

support page at 

www.ElevenEngineering.com/Sales & Support/

 or contact FAE 

support at 

[email protected]

SP

SP-205 Evaluation Kit Operating Instructions

DO4611

www.ElevenEngineering.com 

   

SP-205 Evaluation Kit Instructions 

 

         DO4611| 

2009.11.05

Page 4/4

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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