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QAM/8VSB/ASI USB Probe DTU-236

The DTU-236 RF Probe and RFXpert software is a comprehensive solution designed to provide real-time analysis and monitoring of terrestrial signals (8-VSB, QAM A/B/C and NTSC RF channels). The RFXpert software is intended to be loaded by the end-user on a PC or laptop and work in conjunction with the DTU-236 RF Probe. RFXpert provides complete RF analysis and logging, along with transport stream recording.

RFXpert provides easy-to-read spectral displays, both constellation and eye diagram displays, and the ability to turn off and on 8-VSB tap equalization to see the uncorrected signal being received.

True demodulated digital reading for MER, Pre-BER, Post BER and EVM
A proof-positive method of signal documentation or drop-point comparisons with programmable, user defined logging and auto-inspection capabilities

Adding StreamXpert to a DTU-236 makes for a cost-effective and user-friendly MPEG2/H.264 transport stream analyzer. Signals can be analyzed from either the ASI or RF inputs of the DTU-236 and can be validated against industry standard ETR101-290 templates. Transport streams can also be captured in the field with StreamXpert for later use.

Real-time analysis, monitoring and recording of MPEG2/H.264
PCR Accuracy and ETR101-290 checking
Integrated MPEG2 video and audio decoding with AC3 and Dolby Digital+ Support

SPECIFICATIONS

RF INPUT

Connector:

75 Ω type ‘F’

Frequency:

44-865 MHz

Signal Level:

-30 to 60 dBmV

Modulation:

8-VSB, QAM A/B/C, NTSC

Band:

Broadcast, FCC Cable, IRC, HRC Cable

ASI INPUT

Connector:

75 Ω BNC

Receive Bitrate:

0-214 Mbp/s

POWER

Source:

USB 2.0 port of host PC

Voltage:

+5 VDC

Current:

>500mA*

*dual USB connections to PC

DIMENSIONS

Physical:

7.1” x 4.2” x 1.4”

Weight:

< 1 lb.

RF TESTS

Level Measurement:

>-30 to +60 dBmV, 0.1 dB resolution, +/- 1 dB accuracy

MER:

15 to 38 dB (measured from constellation)

EVM:

2.3 to 16.5% RMS

BER:

Pre/Post FEC, SER, Errored Seconds

Modulation Displays:

Constellation and Eye diagram

Echo Profile:

-2.3 to +40 μS delay range, 0 to -30 dBc echo level

Spectrum Display:

Channel (6-8 MHz), Adjacent ( 18-24 MHz), Full (44-865 MHz)

LOGGING

Type:

Interval and Alarms

Auto Inspect:

Automatic analysis and logging of a channel plan

File:

User-defined, limited by host hard drive space

MINIMUM PC / LAPTOP REQUIREMENTS:

Operating System:

32/64-bit Windows XP or newer

USB:

2.0 for communication/power

Processor:

Pentium 4 1.0GHz

RAM:

256 MB minimum

STREAMXPERT

Input Bitrate

214 Mb/s maximum

MINIMUM PC / LAPTOP REQUIREMENTS

Operating System:

32/64-bit Windows XP, all versions

DirectX:

9.0c or higher

Video Card:

AGP 64 MB equivalent or better ( SD video decoding); 1 G B for HD H.246

Sound Card:

Standard sound card ( for audio decoding)

Processor:

PIII 1.0 GHz (no video decoding) P 4 1.7 GHz / Pentium M 1.5 GHz ( SD Decoding) P 4 3.0 GHz / Pentium M 2.0 GHz ( HD Decoding)

RAM:

256 MB minimum B est results (HD) with 512 MB+ dual channel DDR400

Disk Drive:

Rates > 40 Mb/s use drive separate ( For Stream Recording) from Operating System R ates ≤ 100 Mb/s use single 7200 R PM SATA or SCSI R ates > 100 Mb/s use single 15000 R PM SCSI, Striped 7200 RPM S ATA, or Striped SCSI

Note1:

Parallel ATA Drives may be used, but usually do not achieve same performance as SATA or SCSI.

Note2:

Drive specifications are recommendations. Different architectures will yield different results in some systems. When in doubt, refer to drive/motherboard specifications or contact a Sencore representative.