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QAM/8VSB/ASI USB Probe
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
DTU-236 RF PROBE
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.
RFXPERT
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 GB for HD H.246
Sound Card: Standard sound card (for audio decoding)
Processor: PIII 1.0 GHz (no video decoding) P4 1.7 GHz / Pentium M 1.5 GHz (SD Decoding) P4 3.0 GHz / Pentium M 2.0 GHz
(HD Decoding)*
* Hyper threading CPU yields best results*
**Or equivalent AMD processor**
RAM: 256 MB minimum - Best results (HD) with 512 MB+ dual channel DDR400
Disk Drive: Rates > 40 Mb/s use drive separate\ (For Stream Recording) from Operating System Rates ≤ 100 Mb/s use single 7200 RPM SATA or SCSI Rates > 100 Mb/s use single 15000 RPM SCSI, Striped 7200 RPMS ATA, or Striped SCSI*
*Best performance is achieved using Striped SATA or SCSI Drives*
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.