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Specifications

Frequencies

Software

FAQs

Raven CDMA PN Scanner

The Raven™ is a portable, PN scanner used to measure and record (Ec/Io) IS-95 coverage of CDMA base stations. Raven measures active CDMA networks or it may be used in conjunction with CDMA transmitters such as the Crocodile™ or Gecko™ which are placed throughout an area of interest. The transmitters may be set to different base station PN offsets and the Raven will measure and record their true Ec/Io signal. These CDMA signals are then grouped and displayed on a laptop PC according to user parameters via USB or RS-232. Raven includes internal GPS receiver for LAT and LON recording, but does not require GPS acquisition for operation. Available in both Cellular and PCS frequencies. Optional model upgrades include NMT-450 measurements.

Download Raven data sheet

Download Raven manual from Technical Support section

Download Raven software updates

Download Raven related articles

USB compliant

Raven Features

Scans all 512 base stations in less than one (1) second
Measures CDMA correlated signal strength (Ec/Io) + 1.0 dB
Derives base station ID and UTC from sync channel
NMT-450 measurements (optional model)
Demodulates sync and paging channels using BVS' proprietary LSI chips
Decodes layer III messages from paging channel
Built-in graphic LCD for display of vital parameters
Complete data output via RS-232 to laptop PC
Includes differential GPS, however does not require GPS reception
"Dead reckoning" navigational option available

Raven Specifications

**RAVEN RF PERFORMANCE**
Frequency Range	PCS model 1930-1990 MHz (bands A through F) Cellular model 869.04-893.97 MHz (bands A and B)
IF Bandwidth	1.25 MHz
Measurement Accuracy	Ec/Io + 1 dB @ 25C degrees) + 2 dB (0-50C degrees)
Receiver Noise Figure	<7.5 dB
Antenna Input Sensitivity	>-90 dBm
Maximum Safe Input	+10 dBm

CDMA PROCESSING

PN Generator Sequences IS-95 I and Q pilot

Minimum Ec/Io -20 dB

Correlation Length 1024 chips (for both I and Q)

Minimum Pilot Power Detectable -20 dB

Base Stations Scan Rate <1 sec.

Display Update Rate <1 sec.

Base Station Identification Direct IS-95 BS ID demodulation

Timing Accuracy Absolute (derived from the sync signal)

Timing Jitter + 200 ns

**CDMA PROCESSING**
PN Generator Sequences	IS-95 I and Q pilot
Minimum Ec/Io	-20 dB
Correlation Length	1024 chips (for both I and Q)
Minimum Pilot Power Detectable	-20 dB
Base Stations Scan Rate	<1 sec.
Display Update Rate	<1 sec.
Base Station Identification	Direct IS-95 BS ID demodulation
Timing Accuracy	Absolute (derived from the sync signal)
Timing Jitter	+ 200 ns

GENERAL SPECIFICATIONS

Software Raven Data Logger and CDMA Chameleon included (Windows 95/98)

Data Output USB and RS-232

Data Retention PC laptop storage

Operating temperature Range 0-50 C degrees

Storage Temperature Range -40-50 C degrees

Dimensions 6.5"W x 8.5" L x 3.25"H

Weight 5 lbs.

Power

External 1A @ +12 VDC

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**GENERAL SPECIFICATIONS**
Software	Raven Data Logger and CDMA Chameleon included (Windows 95/98)
Data Output	USB and RS-232
Data Retention	PC laptop storage
Operating temperature Range	0-50 C degrees
Storage Temperature Range	-40-50 C degrees
Dimensions	6.5"W x 8.5" L x 3.25"H
Weight	5 lbs.
Power	External 1A @ +12 VDC

Raven Frequencies

PCS 1930-1990 MHz (Bands A through F)
Cellular 869.04-893.97 MHz (Bands A and B)

Raven Software

The Raven Data Logger is the software package written specifically for the Raven PN Scanner. It allows logging and storing of all Ec/Io data collected. this data is then easily imported into an array of popular post processing applications for further analysis.

The Active Walsh Code screen shows the power distribution for each of the 64 Walsh Codes. The different channels are color-coded and represent the pilot, sync, paging, and traffic channels. There will always be 1 pilot (code 0) and 1 sync channel (code 32). The paging channels will appear in code slots 1 thru 7 and traffic channels may appear in any of the remaining slots.

Raven FAQs

Does Raven require a GPS antenna to function?
No. The Raven gets all its necessary GPS data (base station ID, time and date) by demodulating the sync channel.

Does Raven require a laptop to scan?
Raven does not need a laptop PC to operate as all of its vital functions are displayed on the built-in LCD and controllable via menus and a single push knob. However, a laptop PC is still recommended for any serious CDMA studies in order to store vital data and parameters.

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