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Summary of Contents for FMUser CZH618F-1000C
- Page 1 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET CZH618F-1000C 1KW Digital FM Broadcast Transmitter User’s Manual USER’S MANUAL FOR CZH618F-1000/500C TRANSMITTER...
- Page 2 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET Please notice this: 1. Read safety notice first. 2. A 50Ω dummy load (power rating ≥1KW) or antenna and cable (VSWR≤1.30) must be connected before turning power on. 3. Please read System Control Logic section to fully understand how the system works.
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Page 3: Table Of Contents
GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET Catalogue Safety Notice 1. Overview------------------------------------------------------------------------------------------------------5 2. Technical Specifications------------------------------------------------------------------------------------6 3. System Structure and Function --------------------------------------------------------------------------7 4. Testing Equipment------------------------------------------------------------------------------------------9 5. Test and Maintenance--------------------------------------------------------------------------------------9 6. Panel Function Description ------------------------------------------------- ---------------------------10 7. Power on Sequence----------------------------------------------------------------------------------------13 8. System Control Logic-------------------------------------------------------------------------------------13 9. -
Page 4: Safety Notice
CAUTION：Please don’t assemble the machine in the moist environment; Please don’t assemble the machine in the easy exploding environment; Please don’t repair by yourself. 5 If you have any other questions, please connect with us through rita@fmuser.net USER’S MANUAL FOR CZH618F-1000/500C TRANSMITTER... -
Page 5: Overview
GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 1. Overview CZH618 digital FM broadcast transmitter, combining with audio modulation and 1KW power amplifier, is an excellent digital product that owns the highest and newest technology. The whole machine adopts the latest digital signal processing and the direct digital synthesized technology. -
Page 6: Technical Specifications
GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 2. Technical Specifications Electrical Specification RF Frequency 87.00MHz～108.00MHz Step 10kHz Output Power Continuous adjustable to setting power Power Accuracy <±10% Power stability <±3% Output Impedance 50Ω RF Output connector 7/16” DIN or 7/8” EIA SFDR <-70dB... -
Page 7: System Structure And Function
Sea Level Height 3. System Structure and Function CZH618F-1000C digital FM broadcast transmitter is composed of five parts: Power Supply, Main Control and Display Cell, Audio Processing and Frequency Synthesizing Cell, Power Control Center, and Power Amplifier Cell (it is showed by Figure 3-1 ). - Page 8 Audio Gain ） Driver Power Filter, Micro Process M CU Sample, （ ） Power Power Control Amplifier Interface Display Buttons Filter 220V AC Power Supply Power Monitor Output Input Figure 3-1 CZH618F-1000C transmitter structure and function USER’S MANUAL FOR CZH618F-1000/500C TRANSMITTER...
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Page 9: Testing Equipment
National Standard & Industry Standard. 5.1 Performance Test CZH618F-1000C Digital FM Transmitter is the Compact product. So it only needs One-Time Testing of the Entire Machine, if the testing report doesn’t meet its technical specifications by the same accuracy instrument, please repair it in professional department or original manufacturer. - Page 10 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 5.1.1 Audio Performance Test Audio Audio Analyzer Demodulation Audio Dummy Transmitter Wattmeter Load Figure 5-1 connecting for audio analyse a. Connect transmitter and test Instrument with cable according Figure 5-1. b. Make audio analyzer output 400Hz, 0dBm;...
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Page 11: Panel Function Description
GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 5.1.3 Harmonic Suppression Dummy Spectrum Transmitter Wattmeter Attenuator Load Analyzer Figure 5-3 connecting for spectrum analyzer a．Connect the test instrument to transmitter according to Figure 5-3; b．Record harmonic suppression relative to carrier (<-60dB). - Page 12 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET RF power out; STEREO stereo indicator; REMOTE remote control is on. TEMP temperature alarm. VSWR VSWR is high. GENERAL PA Voltage or PA Current system alarm; RF MUTE inter-lock in or excessive forward power or excessive reflect power.
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Page 13: Power On Sequence
GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 1. AC Socket PIN1----L； PIN2----GND PIN 3----N； 2. Axial Fan for power supply 3. COM RS232 PIN 2----TX PIN 3----RX； PIN 5----GND； 4. RF Test Port 5. Fuse Socket with 25A . -
Page 14: System Control Logic
GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 8. System Control Logic 8.1 RF Output Control The RF output of CZH618F-1000/500C digital FM broadcast transmitter is controlled by switches: RF Switch in main menu and period control switch in RTC menu. - Page 15 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 8.4 Time Period Modification It is suggested that disable Period Control before correcting date and time or changing period’s start and end time to avoid instantaneous undesired RF power on and off.
- Page 16 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 9.1.3 Return to Main Menu When there is no operation (press button) for a long time, system will return to its main menu automatically with LCD backlight off. Not saved updated parameter will be replaced with its old value.
- Page 17 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 9.2.3 Main menu page Figure 9-3 Main menu page Figure 9-3 shows main menu page. The audio bar displays at the left of the page. The scale means modulation deviation. This page contains the parameter as following:...
- Page 18 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET Figure 9-4 Page of VIEW Figure 9-4 shows the all parameters in the VIEW page. In the VIEW page, users can only browse the parameters. If users want to modify the parameters, it should to be enter the SET page.
- Page 19 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 9.2.5 Page of STATUS Figure 9-5 Page of STATUS Two pictures in Figure 9-5 show the status of all parameters, users can find out the system is running normally or not. RF OUTPUT: Normal/OFF/Drop;...
- Page 20 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET Warning: amplifier voltage is high, may cause RF power drop. Protected: amplifier voltage is too high, RF power is turned off. DRV CURRENT: Normal/Warning/Protect Normal: amplifier driver current is normal. Warning: amplifier driver current is high, may cause RF power drop.
- Page 21 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 9.2.6 PASSWORD CHECK Figure 9-6 Page of password check Check password before entering [Set] and [Preset] menu When Password Check is enabled. Enter password in “Password” first, and then select [Sure]. If correct password is entered, it will enter to desired menu.
- Page 22 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 9.2.8 BROADCAST Menu Figure 9-8 Page of BROADCAST Menu FWD Power: forward power, display only, used to watch real output power when adjusting output power percentage. RFL Power: forward power, display only, used to watch real output power when adjusting output power percentage.
- Page 23 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 9.2.9 GERNERAL Menu Figure 9-9 Page of GERNERAL Menu Baud Rate: select baud rate for remote control. Address: set device address for remote control. Remote: enable or disable remote control. [EXIT] return to its parent menu.
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Page 24: Indicator Light
GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET AGC: enable Baud rate: 9600 bps Address: Remote: Period Control: Password: 000000 9.2.12 PASSWORD Menu Figure 9-12 Page of Password set Change password: enter new password in “New” edit box, and enter the same new password again in “Again”... - Page 25 GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 10.2 Lamp for RF When the RF SWITCH in the main menu is set to ”ON”, and the POWER SET percent is more than 0,this green lamp is light. 10.3 Lamp for AUDIO If the audio input mode is set to be the stereo, the lamp is light.
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Page 26: Failures Check
GUANG ZHOU HAN TING INFORMATION TECHNOLOGY CO.LTD WWW.FMUSER.NET 10.8 Lamp for RF MUTE It means nothing for this mode of equipment. 11. Failure Check 11.1 Turn on the power supply, but the equipment doesn’t work it may： The fuse is broken: change the fuse;...
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