Promax DT-620B User manual

DT-620B
FIBRE OPTIC TO DVB-T RECEIVER
- 0 MI2042 -

SAFETY NOTES
Read the user’s manual before using the equipment, mainly "SAFETY RULES"
paragraph.
The symbol on the equipment means "SEE USER’S MANUAL". In this manual
may also appear as a Caution or Warning symbol.
WARNING AND CAUTION statements may appear in this manual to avoid injury
hazard or damage to this product or other property.
USER'S MANUAL VERSION
Version Date
1.0 January 2015

SAFETY REQUIREMENTS
* The security can be compromised if not applied the instructions in this
manual.
* Use only with other DT series modules for power and control and those listed in
the Specifications.
* Remember that voltages higher than 70 V DC or 33 V AC rms are dangerous.
* Looking at all times the ambient conditions specified for the device.
* The operator is not authorized to intervene within the team. Any change in the
equipment should be carried out by specialized personnel.
* Do not obstruct the ventilation system equipment.
* Use for the inputs / outputs, especially with high levels, appropriate cables
with low level radiation.
* Follow the cleaning instructions described in the Maintenance section.

* Symbols related with safety:
Descriptive Examples of Over-Voltage Categories
Cat I Low voltage installations isolated from the mains.
Cat II Portable domestic installations.
Cat III Fixed domestic installations.
Cat IV Industrial installations.

TABLE OF CONTENTS
1 INTRODUCTION ........................................................................................ 1
1.1 Description ....................................................................................... 1
1.2 Equipment Detail ............................................................................... 2
1.3 Instructions ...................................................................................... 2
2 SPECIFICATIONS ...................................................................................... 3
2.1 Specifications DT-620B....................................................................... 3
3 MAINTENANCE .......................................................................................... 4
3.1 Cleaning Recommendations ................................................................ 4
January 2015

January 2015 1
FIBRE OPTIC TO DVB-T RECEIVER
DT-620B
1 INTRODUCTION
1.1
Description
The DT-620B is an optical receiver that converts input optical signals into RF
DVB-T signals to transmit them over a distribution network.
In order to cover a certain distance, the digital signal is converted into an optical
signal through a converter and once at the other end of the link, the DT-620B
does conversion again to DVB-T, recovering the signal.
The module has an optical SC input and an RF type BNC output. Input is
demodulated and optimized to broadcast on DVB-T and DVB-C digital channels.
At the BNC module output there is released an RF signal. Then it can be inserted
into a distribution network with the advantages of robustness and high quality
offered by the digital technology.
This module is suitable for optical links up to 40 km away (depending on the
number of channels). The optical input supports wavelengths from 1100 to 1600
nm.
Figure 1.

1.2
Equipment Detail
FRONT VIEW REAR VIEW
Figure 2.
Power ON led
Optical signal input power indicator:
red: < 8 dBmo
green: 8 dBmo - 10 dBmo
amber: > 10 dBmo
Power input
Optical modulated input (SC/APC)
RF Output (BNC)
1.3
Instructions
Connect the power supply to the power input of the DT-620B module .
Connect the optical signal to the optical input of the DT-620B module .
The module converts optical into DVB-T and releases this signal at the
output, in order to distribute it over the digital network .
Connect the digital distribution network to the DT-620B RF signal output.
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January 2015 3
2 SPECIFICATIONS
2.1
Specifications DT-620B
Parameter Value
Optical Input
Wavelengths range From 1100 to 1600 nm
Input power +7 dBm to –10 dBm
Maximum power Input +10 dBmo
Return Loss –40 dB
LED red: < 8 dBmo
green: 8 dBmo - 10 dBmo
amber: > 10 dBmo
Connector SC / APC
Fibre Single mode 9/125
RF Output
Bandwidth 470 MHz to 862 MHz
Output level 0 dBm
Output impedance 50 Ω
Connector BNC
Power supply
Power supply Voltage and
maximum consumption +12 V < 0,5 A
Operating Environment
Altitude Altitud up to 2000 m.
Temperature range 5 °C to 40 °C
Maximum relative
Humidity 80% (up to 31 °C), decreasing linearly to 50% at 40 °C.
NOTE: Equipment specifications are set in these environmental operating conditions. Operation outside
these specifications are also possible.
Please check with us if you have specific requirements.
Mechanical Characteristics
Dimensions A 120 x AL 52 x Pr 197 mm
Weight 356 g
Accesorios
AL-103 External DC Charger
CA-005 Mains cord
0 DG0184 Quick Reference Guide.
PACKING RECOMMENDATIONS
You should retain all packaging materials on a permanent basis if necessary to return the equipment to the
Technical Assistance Service.

3 MAINTENANCE
3.1
Cleaning Recommendations
CAUTION:To clean the case, make sure the equipment is offline.
CAUTION:Do not use cleaning aromatic hydrocarbons or chlorinated
solvents. These products can harm the materials used in
construction of the box.
The box was cleaned with a mild detergent solution and water,
using a soft cloth.
Dry thoroughly before re-use the equipment.
CAUTION:Do not use for cleaning the front panel and particularly the
viewfinders, alcohol or its derivatives, these products may harm
the mechanical properties of materials and reduce their shelf life.
4January 2015

PROMAX ELECTRONICA, S. L.
Francesc Moragas, 71-75
08907 L’HOSPITALET DE LLOBREGAT (Barcelona)
SPAIN
Tel. : [phone] *Tel. Intl. : ([phone]
Fax : [phone] *Fax Intl. : ([phone]
http://www.promaxelectronics.com
e-mail: [e-mail]