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CHAPTER 2 Safety Instruction and Installations 

Safety Instructions 

WARNING: Hot plug is not allowed since it may cause system halted. 

To prevent fire or electrical shock, do not expose the device to rain or moisture. 

 

  The encoder modulator is powered with a voltage of 12V DC. The power supply voltage 

must not exceed the recommended voltage, which otherwise may cause irreparable damage 

to the device and the invalidation of the warranty. Therefore:   

 

Do not replace power supply with a voltage greater than 12V DC.   

 

Do not connect the device to the power if the power cord is damaged.   

 

Do not plug the device into mains supply until all cables have been connected correctly.   

 

Do not cut the cord.   

Avoid  placing  the  device  next  to  central  heating  components  and  in  areas  of  high 

humidity.   

Do not cover the device with elements that obstruct the ventilation slots.   

If the encoder modulator has been kept in cold conditions for a long time, keep it in a warm 

room minimum 2 hours before plugging into the mains.   

Mount the device in vertical position with the connectors located on the top side.   

When replacement parts are required, be sure the service technician has used replacement 

parts  specified  by  the  manufacturer  or  have  the  same  characteristics  as  the  original  part. 

Unauthorized substitutes may result in fire, electric shock or other hazards. 

Safety  check-  Upon  completion  of  any  service  or  repairs  to  this  device,  ask  the  service 

technician to perform safety checks to determine that the device is in proper condition. 

Installations 

RISK of damage to the unit 

Mechanically handling the unit may result in damage. Do not connect the unit to the power 

supply before or during assembly. Connect the unit as below instructed.   

NO HOT PLUG AND CONNECT THE CABLE AS FOLLOWING STEPS.   

1.

 

Mount  and  tighten  the  screws  and  plugs 

to secure the unit to the wall. Left 10 cm 

of free space around from each unit.

 

 

 

 

1

Содержание DHM-2057

Страница 1: ...DHM 2057 DVB T SD HD Encoder Modulator with USB Home Use User Manual...

Страница 2: ...onditions of performance Keep this manual for future reference Directory CHAPTER 1 Product Introductions 1 General Description 1 Working Principle 1 Technical Specifications 1 CHAPTER 2 Safety Instruc...

Страница 3: ...ith applications in home entertainment surveillance control hotel Digital Signage shops etc It is an all in one device integrating MPEG 4 AVC H 264 encoding and modulating to convert audio video signa...

Страница 4: ...60p 1080 30p Aspect Ratio 16 9 4 3 Bit rate 1 000 18 000 Mbps Audio Encoding MPEGI layer 2 Sample rate 48KHz Bit rate 64 96 128 192 256 320kbps CVBS Encoding Section Video Encoding H 264 MP L 3 0 Inte...

Страница 5: ...5 6 7 8 Guard Interval 1 32 1 16 1 8 1 4 Transmission Mode 2K 8K MER 31dB RF frequency 142 5 946 MHz 1KHz step RF output level 14 6dBm 0 1db step System RF mix in ATT 10 dB Management Local LCD contro...

Страница 6: ...ion slots If the encoder modulator has been kept in cold conditions for a long time keep it in a warm room minimum 2 hours before plugging into the mains Mount the device in vertical position with the...

Страница 7: ...b Connect the power plug to the unit mains connector c Connect the power plug to the mains socket Cascade Installation DHM 2057 unit has 1 TV signal to RF output encoded as DVB T Digital TV signal Sev...

Страница 8: ...m mode Enter Use this button to enter a submenu or save a new setting after adjustment press it to start adjusting the value of certain items with Up Down buttons when the corresponding underline flas...

Страница 9: ...em System Save Config System Load Saved CFG System Lock Keyboard System Product ID System Version Save Config Yes No Load SavedCFG Yes No Lock Keyboard Yes No 0035564905656 70ec8f7b0000f Encoder Modul...

Страница 10: ...menus displayed and edit the values or select modes 6 Country User can choose country under this menu There are five options Default Australia New Zealand Sweden and Italy If user chooses Default modu...

Страница 11: ...0s 45s 60s 90s and 120s seconds 20 Key Password to set a 6 digit password for unlocking the keyboard 21 Lock Keyboard Choose Yes to lock the keyboard then the keyboard will be locked and cannot be app...

Страница 12: ...coder modulator is embedded with USB Port for upgrading The supported file format is IMG Upgrade steps Insert USB device Upgrade automatically It will need 10 20 seconds to upgrade Remove USB device P...

Страница 13: ...19 5 223 C53 701 704 5 708 C12 223 226 5 230 C54 708 711 5 715 C55 715 718 5 722 UHF C56 722 725 5 729 C57 729 732 5 736 C20 470 473 5 477 C58 736 739 5 743 C21 477 480 5 484 C59 743 746 5 750 C22 484...

Страница 14: ...5 9 95 11 06 11 71 12 06 2 3 9 95 11 05 11 70 12 06 11 61 12 90 13 66 14 07 13 27 14 75 15 61 16 09 3 4 11 19 12 44 13 17 13 57 13 06 14 51 15 36 15 83 14 93 16 59 17 56 18 10 5 6 12 44 13 82 14 63 15...

Страница 15: ...ions applied EU Harmonized Standards 55022 2010 61000 3 2 2006 A1 2009 A2 2009 EN61000 3 3 2008 EN 55024 2010 50083 2 2006 IEC60728 2 2010 EN 61000 4 2 2009 EN61000 4 3 2006 A1 2008 A2 2010 EN 61000 4...

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