DHT series is hybrid HMS and DOCSIS®–EuroDOCSIS® status monitoring transponders, designed to install inside of MD and MD-300 series power supplies. As an outdoor status monitoring solution, DHT series is designed to withstand extreme temperature and electrical conditions typical of the outside HFC plant, as well as to meet DOCSIS® and EuroDOCSIS® cable modem specifications.

With SNMPv1, v2c and v3 support, DHT series easily interfaces with up to 10 network

management systems to monitor power supply objects defined by HMS. It also monitors several DOCSIS® RF parameters, and supports various user-configurable objects to help operators customize the way they monitor and manage their power supplies. Dual IP capability provides further flexibility for implementation.

DHT series features an optional expansion port that enhances status monitoring capabilities and accepts future add-ons.

Highlights

Designed for MD and MD-300 series outdoor UPS for Cable / HFC / Broadband networks
Proven technology with millions of DOCSIS® and EuroDOCSIS® chips deployed
DOCSIS® 2.0 / EuroDOCSIS® 2.0 compliant
Craft port for local diagnostics
Applies all HMS Power Supplies MIBS
Compatible with popular Software Management Systems
Single or dual IP modes
Internally generated Web pages to view status of power supply and transponder
Surge protection as per IEEE

Specifications

Models	DHT-PS-FY-03	DHT-PS-FY-07
Upstream (Transmitter)
Compliance	DOCSIS® 2.0	EuroDOCSIS® 2.0
Frequency Band	5 to 42 MHz	5 to 65 MHz
Level Range (S-CDMA)	+8 to +53dBmV(all modulations)	+68 to +113dBuV(all modulations)
Level Range (TDMA)	+8 to +54dBmV(32QAM, 64QAM); +8 to +55dBmV (8QAM, 16QAM); +8 to +58dBmV (QPSK)	+68 to +114dBuV (32QAM, 64QAM); +68 to +115dBuV (8QAM, 16QAM); +68 to +118dBuV (QPSK)
Modulation Type	QPSK, 8QAM, 16QAM, 32QAM, 64QAM 及 128QAM
Modulation Rate (nominal)	TDMA: 160, 320, 640, 1280, 2560, 5120KHz; S-CDMA: 1280, 2560, 5120KHz
Bandwidth	TDMA: 200, 400, 800, 1600, 3200, 6400KHz; S-CDMA: 1600, 3200, 6400KHz
Output Impedance	75Ω
Output Return Loss	better than 6dB
Downstream (Receiver)
Center Frequency	91 to 857MHz ± 30 KHz	112 to 858MHz ± 30 KHz
Level Range (one channel)	-15dBmV to +15dBmV	43 to 73dBuV for 64QAM; 47 to 77dBuV for 256QAM
Modulation Type	64QAM, 256QAM
Symbol rate (Nominal)	5.0569Msym/s (64QAM); 5.361Msym/s (256QAM)	6.952Msym/s (64QAM & 256QAM)
Bandwidth	6MHz	8MHz
Total Input Power	less than 30dBmV
Input (load) Impedance	75Ω
Input Return Loss	better than 6dB (88 to 860 MHz)
Interface
UPS Supported	MD series, MD-300 series
Network Interface	F Type, USB
Serial Interface	HMS022 (TTL)
Installation	Plug-in
LED Display	Cable, Monitor, Power, OK
Network Communications
Protocols	IP, TCP， DHCP, TP, TFTP, SNMP, HTTP
MIB	DOCSIS® MIBs, HMS MIBs
Status Monitored
Input Parameters	Input voltage, frequency
Output Parameters	Output voltage, current
Battery	Voltage of individual battery & battery string
UPS Status	Inverter Temp., Tamper Switch, Upstream & Downstream Channels, Transmitter & Receiver Power etc..
Electrical
Operating Voltage	20 to 60VDC
Power Consumption	0.25W (sleep mode) to 6.4W (max.)
Environmental
Operating Temperature	-40°C to +85°C (-40°F to 185°F )
Humidity	0 to 90% non-condensing

More voltage configurations may be available. Please download the datasheet or contact us directly for more details.
Due to continuing improvements, the product is subject to change without prior notice.

DHT Series HMS Transponder

Highlights

Specifications

Related Products

MD Standby Power Supply (Outdoor)

MD-300 300W Outdoor UPS

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