Manufacturer 1kw Stainless Steel Terrestrial Digital Television Broadcasting Transmitter

• Type: Transmitter
• Function: Signal Transmitting Device, Signal Transmission Equipment
• Certification: ISO
• Condition: New
• Operating Frequency: 13-48CH 470-800MHz
• Inband Unevenness: Within+0.20~-0.30dB
• Model NO.: ZRTV-FSJ
• Frequency Accuracy: for Mfn Mode, Frequency Accuracy: -8Hz
• RF Output Power Stability: ±0.05dB
• Rated Output Power: ≥1000W
• Overall Working Efficiency: Greater Than or Equal to 28%
• Work Noise: ≤52dB
• Transport Package: Export Wooden Box Packaging
• Specification: 655× 1400× 900
• Trademark: NJZR
• Origin: Nanjing, Jiangsu

Product Description

Technical description

Main features:

★ Remote control and telemetry function: Equipped with remote control and telemetry function, mainly including transmitter basic working environment monitoring, transmitter working status monitoring, signal process monitoring, transmitter protection, and fault alarm.

★ Power amplifier unit: A single power amplifier module with a power of 400W, controlled by AGC; Three power amplifier modules are combined through a phase synthesizer to form a complete power amplifier. The power amplifier units support interchangeability, and the power amplifier modules support hot swapping; The power amplifier module has input level, forward power, reflected power, working voltage, working current, and temperature monitoring functions; The power amplifier is powered by three switch power modules with a power capacity of 3kW in parallel, and the power modules support hot swapping.

★ Protection: The entire machine has functions such as over power, over standing wave, over temperature, over current, over voltage, over excitation, under excitation, and fan fault protection.

★ Power monitoring: With three-phase AC power supply voltage and fan current monitoring function.

★ Whole machine control: It has touch screen display and control operation functions, as well as remote monitoring, timed switch on/off, and coaxial switching interlock functions.

★ The entire machine has no intermediate amplification part, and the RF signal of the exciter is directly distributed to each power amplifier module through an in-phase distributor.

The entire machine adopts distributed control technology; The entire system is connected through Ethernet (TCP/IP protocol communication is used between power amplifier components).

technical parameter

1. General requirements

1.1 Environmental conditions

a) Environmental temperature

Normal operation: 0 ºC~45 ºC;

Permissible working temperature: 0 ºC~50 ºC;

b) Relative humidity

Normal operation: ≤ 90% (20 ºC);

Permissible work: ≤ 95% (without condensation);

c) Atmospheric pressure: 86kPa~106kPa.

1.2 Working voltage

a) Voltage amplitude: three-phase 342V~418V AC

b) Power frequency: 50Hz ± 1Hz.

2. Interface requirements

a) The TS stream input adopts ASI interface, BNC connector, female type, with an input impedance of 75 Ω;

b) The 10MHz clock input adopts BNC connector, female type, with an input impedance of 50 Ω (the 10MHz clock is a sine wave, with a peak to peak range of -5dBm to 12dBm);

c) The 1pps input adopts BNC connector, female type, TTL level, and input impedance is 50 Ω;

d) The monitoring output adopts SMA or BNC connectors, female type, with an output impedance of 50 Ω;

e) The remote control and monitoring interface adopts RS232, RS485 or RJ45 (Ethernet remote control interface), among which RS232 adopts DB9 connector, male type; RS485 adopts DB9 connectors, male or female;

f) The transmitter output interface adopts the connector model recommended in GB/T 12566-1990.

3. RF output load impedance

The nominal value of the RF output load impedance is 50 Ω.

4. Functional requirements

4.1 Working mode: Supports all working modes specified in GB 20600-2006, and under various working modes, the maximum net bit rate of the system (8MHz bandwidth) meets standard specifications.

4.2. Remote control and telemetry function: The transmitter should have remote control and telemetry function, mainly including: basic working environment monitoring of the transmitter, working status monitoring of the transmitter, signal process monitoring, transmitter protection and fault alarm, etc.

4.3. Support multi frequency network (MFN) or single frequency network (SFN) networking methods, where the SFN mode is required to comply with the relevant provisions of GY/T 229.1-2008.
 

Serial Number	project	index
1	Operating Frequency	The working channel and frequency range meet (13-48 CH, 470-800 MHz) and meet the requirements of GB / T 14433-1993.
2	Single-frequency network mode frequency adjustment step size	0.25Hz
3	Frequency Stability (3 months)	With an internal reference source, frequency stability 1 (10-7; With an external reference source, the frequency stability is 1 (10-10
4	frequency accuracy	For the MFN mode, the frequency accuracy is: -8Hz;For the SFN mode, the frequency accuracy is: 0Hz
5	This vibration phase noise	For specific indicators, see 3.6 Phase noise of local vibration
6	The RF output power stability	±0.05dB
7	Reflective loss of output load (within 8 MHz band)	Normal operation: 26dB Allowed to work: 20dB

8	Shoulder strap (at off-center frequency ± 4.2 MHz; measured before the filter)	-4.2MHz≤-44.0dB,+4.2MHz≤-45.3dB
9	In-band Inflatness (fc±3.591MHz)	Within + 0.20~-0.30dB (in non-dual pilot mode)
10	With external spectrum characteristics	Compliance with the relevant provisions of the band spectrum template in GB20600-2006
11	Modulation Error Rate (MER)	≥41.0dB
12	The ching power within the adjacent channel	The ratio of the transmission power in the adjacent channel to the transmission power in the band is-56.6dB (and the transmission power in the adjacent channel is 2.2 mW)
13	Launching power outside of the adjacent channel	The ratio of the transmission power in the adjacent channel to the transmission power in the band is-76.6dB (and the transmission power in the adjacent channel is 0.1 mW)
Note: All indicators shall be measured after the filter, except as specifically stated.