HT1500A Series USER MANUAL
Contents
1. 1550nm Direct Modulation Optical Transmitter HT1500A Series USER MANUAL Ver 1 0en Hangzhou Huatai Optic Tech CO LTD CONTENT 1 0 PRODUCT SUMMARI ZE nu ss nie 1 2 0 ENSTAEEATION nee 1 2 14 UNPACKING ea ranana to na ee tak ee aE ec eae 1 2 2 Transmitter Mounting and Power Connection c ceceeeeeee nenn nennen 1 223 RFCOMNEGCEIOMam saas rar BEL E MAJAN SS a ESSA TIME Eee 2 2 4 OptiC CONNEeCtiON zus ae VENNOLAN HESA OH TAKSIN VEIN Seed Aita nr NA 2 3 0 TRANSMITTER CONTROLS INDICATORS AND ALARMG 0sesesee008 4 3 1 The operation of the panel ursssesennenennnnennnnnn nenn nenn nenn nenn nenn 4 4 0 DESCRIPTION OF STATUS ALARM nunsnnunnnnnununanannnnennnunanannnnnnennnan anne 6 5 0 GUARANTEE AND REPAIR I TEMS uuuusunsnnunannunannunannunannunannunnnnunnnnannen 6 1 0 PRODUCT SUMMARI ZE Direct modulation will lead to high laser chirp Laser s bias current is modulated by signal and the optical spectrum shifts and shakes Laser chip will interact with dispersion effect caused by standard single mode fiber SMF 28 which will generate serious distortion in the place of 1550nm This kind of distortion will become more serious with the increase of transmission distance bandwidth and channel number Huatai HT1500A is a 1550nm direct modulation optical transmitter with high index and AGC function It adopts high linearity and low chirp DFB laser built2. the optical plate Do not remove the screws on the optical bulkhead connector Slowly remove the optical connector plate from the rear panel and disconnect each fiber connector from the bulkhead mounted on the plate Clean each fiber connector according to section A of the fiber cleaning guidelines 4 Make sure the laser key switches on the front panel of the transmitter are in the OFF position 5 Connectafiber patch cord from the output of the transmitter to an optical power meter 6 Turn the transmitter laser key switch to the ON position 7 Usingthe optical power meter verify the transmitter optical power is within specification 8 Turn the transmitter laser key switch to the OFF position Page 3 of 6 3 0 TRANSMITTER CONTROLS INDICATORS AND ALARMS This section of the manual will give an overview of the available menus in the HT1500A series transmitter and their descriptions All instructions in Section 3 0 refer to the representation f the front panel shown in the diagram below The user scrolls through the Tx menus using the push bottoms found on the front panel of the Tx these are located just to the right of the LCD screen NOM LASER Low S High RF Test Lor A V Select O RF TEMP 7 Modulation Depth 5 Poweri e e Power2 AGC MGC OMI 3 1 The operation of the panel 3 1 1 Open menu Plug in 110V city power supply B Turn on power switch in the rear panel Front panel di
3. fault In order to protect the laser there is time delay function after turning on with the key the laser will start to work after 10 seconds 5 0 GUARANTEE AND REPAIR ITEMS 1 Each unit is packaged with lt Products Oualification gt with the series number provide one year s guarantee 2 Micro processor software with the function of monitoring laser status digital display trouble alarm network management etc pump laser will not be damaged only by man induced factor In case of Red lamp sparking Alarm Please return for repairing User should not open the top cover for repair otherwise even within guarantee period maintain and material fee will be charged 3 Lifelong maintain and upgrade is provided even guarantee period is expired 4 If component is damaged by man induced factor material fee will be charged Hangzhou Huatai Optic Tech CO LTD www catvworld net E mail htocatvworld net Page 6 of 6
4. in pre distortion compensation and AGC APC ATC closed loop control which improves the system index obviously It can be used in FTTx lt 10Km of second grade service area sub headend also can be used in WDM narrow band multiplexing and IP OAM 2 0 INSTALLATI ON 2 1 Unpacking Inspect the shipping boxes for any obvious damages Unpack the unit from all packaging boxes Inspect the appearance of the unit for any shipping damages Document and inform the shipping company and your local representative as seen in section 1 2 of the damages Save the shipping boxes and their inserts for any future reshipment for upgrade or repair NOTE In the event of a reshipment back to the manufacturer any additional damages caused by not using the original boxes will be considered responsibility of the customer 2 2 Transmitter Mounting and Power Connection 1 Place the unit into a 19 inch wide rack or cabinet Make sure to leave a 1 75 inch about 4 5cm space above and below the unit 2 According to the design request HT1500A series 1550nm optic transmitter can work under 0 C 50 C 32 F 122 F temperature range We recommend 25 C 77 F environment temperature Humidity not bigger than 95 under non coagulation condition If necessary the equipment should keep the suitable temperature amp humidity in the Page 1 of 6 Page 2 of 6 restrained scope We recommend to operating in the environment wi
5. ltage 24V Menu 12 IP Adjustable list display the IP address of SNMP Menu 13 S N Read only menu tells the serial number 3 1 3 Menu assistant manual The default control mode is AGC When the OMI modulation menu displays RF Mode AGC press SELECT key and the menu will display RF Mode Then press a or vy the menu will display RF Mode Manual and the change from AGC to MGC has been finished If you want to change the current control mode back into AGC press SELECT key when the current menu displays RF Mode Manual then the menu will display RF Mode Then press 4 or vy the change from Manual to AGC will be finished and the menu will display RF Mode AGC Page 5 of 6 4 0 Description of status alarm Working status indication LED which is near the powers supply switch in the front panel When it is green it is working properly Red indicates the laser does not work Red sparking is alarm A With 110V power supply if machine is good digital panel will display KEY OFF there is Red light B Turn on with the key display KEY OFF for seconds laser is also on when the input optic power is in the normal range indication light turns into Green from Red C Press 4 v bottom can display parameters D If any fault listed above occurred there will be alarm Red sharking Micro processor will cut down the laser automatically and digital panel show the cause of the
6. onnectors Remove the fiber connectors dust cap and wipe the fiber connector tip with a dry lint free cloth such as Kimwipes Inspect for scratch s or debris on connector surface by using a microscopes ie 100x or 200x If no scratches or debris are found the connector is now clean and ready for connection If debris or scratches are found then repeat the fiber patch cord connector cleaning guidelines Fiber Bulkhead connectors Compressed air may be used to clean fiber bulkhead connectors Use compressed air with at least the following specifications Non residue inert gas for precision dust removal Ultra filtered to lt 0 2 microns Recommended for optical systems Using compressed air as listed above remove the bulkhead dust cover and hold the can of compressed air about 6 inches from the connector After spraying a few short bursts into the bulkhead the connector is clean and ready for connection If compressed air is not available the transmitter fiber bulkhead connector may be cleaned by 2 5 mm cotton swap or connector plate may be removed to clean the internal fiber patch cords CAUTI ON Use caution when handling fibers Do not exceed fiber manufacturers pulling tension or bend radius specifications when removing fiber bulkhead connector plate To remove the transmitter optical connector plate remove the screw on the far left of the optical plate and remove the screw on the far right of
7. splay KEY OFF Laser Status lamp Red RF Status lamp Red TEMP Status lamp Green POWERI Status lamp Green POWER2 Status lamp Green C Press laser start up keyswitch Front panel shows KEY ON when the input optic power is in the normal range Laser status lamp turns green from red machine enters self checking after checking it enters working status display Descriptor 3 1 2 Start up main menu Press 4 v button will display below menu in sequence Menu 1 Descriptor Read only menu tells the type of this equipment Menu 2 LD POWER Read only menu displays the optical output power in dBm Page 4 of 6 Menu 43 LDBIAS Read only menu displays laser bias temperature in C Menu 44 LD TEMP Read only menu displays the laser temperature in C Menu 5 COOLING HEATING Read only menu displays the amount of current that the Thermoelectric Cooler requires to maintain the laser temperature at nominal 25 C Menu 6 UNIT TEMP Read only menu tells the system temperature Menu 47 RFLVL Read only menu tells the RF input level Menu 48 RF MODE Current RF mode display AGC Manual If it appears RF Mode AGC while it was in the state of AGC If it appears RF Mode Manual while it was in the state of MGC Menu 49 5V Monitor Read only list display the voltage 5V Menu 10 5V Monitor Read only list display the voltage 5V Menu 11 24V Monitor Read only list display the vo
8. thout dust 3 Equipment powered by AC or steady voltage DC In both of AC amp DC AC is the chief power supply Reguest of power supply AC input 94 245VAC 50 60Hz DC input 36 60VDC floating Power consumption Maximum 50W 4 TheDC power supply of the eguipment must be the SELV supply stipulated as CAN CSA C22 2 N0 950 95 standard 5 The machine should have good grounding grounding resistance lt 40 According to the international standard 220V plug in adopts tri wire rule the middle wire is the grounding wire Before connecting circuit please use big spec 20AWG and more electric wire to connect the grounding screw on the bottom and the grounding frame When use DC input power supply the equipment chassis must be grounding 2 3 RF connection Connect the RF cable amp the connector on TX rear panel RF connector is F type plug F Female F male Optional The resistance is 75Q 2 4 Optic connection 1 Considering for protection amp safety all the fiber optic connector need protect cover in transportation 2 In order to ensure the insertion loss amp return loss the end face of fiber optic connector is polished extremely Please don t dirt the pollute the connector Even very micro dust will also affect the transmission quality When off the fiber optic connector please put on the protection cover 3 Clean all fiber patch cords before connecting to the transmitter Cleaning Guidelines Fiber Patch cord c
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