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UHF & VHF Digital TV Transmitters

                                                                        25 W – 5 KW TV Transmitters

·         Full Color Touch Screen Display

·          Internal RF Isolator (UHF, VHFIII)

·         Two Stage Amplification

·         Class A/AB Operation

·         Efficient Transistors and Power Supplies

·         Extensive Monitoring via Ethernet, SNMP, and Remote Samples

·         Two Year Warranty

 

RF CHARACTERISTICS

Frequency Range

VHF 50 – 230 MHz, UHF 470 - 860 MHz

Input Power

0 dBm into power amplifier from modulator

Nominal Output Power (8VSB)

VHF: 25W, 40W, 100W, 250W, 500W, 1kW, 2kW, 3KW, 4KW, 5KW

UHF:  40W, 100W, 250W, 500W, 1kW, 2kW, 3KW, 4KW, 5KW

Power Level

Adjustable 10 – 100%

Input Impedance

50 Ω into amplifier, BNC female

Output Impedance

50 Ω, N or 7-16 DIN female (dependent on power level)

Modulation

8VSB, QAM, DVBT/H, etc (output power will change between standards)

Signal and Noise

MER >36 dB typical

BER >38 dB typical

SN >40 dB typical

Phase Jitter

>104 dB

Shoulders

>-50 dB typical, ATSC mode compliant to ATSC A53/B

 

Typical Performance Specifications

ELECTRICAL

 

Flexible AC Input

VHF PA:

25W/100W/250W/500W -

90-264Vac

 

 

1kW/2kW/3kW/4kW/5kW -

180-264Vac

 

UHF PA:

25W/100W/250W/500W -

90-264Vac

 

 

1kW/2kW/3kW/4kW/5kW -

180-264Vac

Other AC supply voltages and phases available upon request

 

INTERFACE

DB25 Remote Port

Control:

RF carrier on/off, RF power up/down, reset

 

Monitor:

Forward/reflected RF level, control PCB Vcc

 

Flags:

Overdrive, VSWR (adjustable trip point), high temperature

 

 

 

Ethernet

Control:

RF carrier on/off, RF power up/down, AGC/manual mode, change VSWR trip point, reset

 

Monitor:

Forward/reflected RF level, pallet voltage, RF input level, temperature, VSWR trip point, model/serial number

 

Flags:

Carrier on/off, overdrive, pallet voltage, VSWR, RF input, temperature, AGC / manual

 

 

 

SNMP

Control:

RF carrier on/off, RF power up/down, AGC/manual mode, change VSWR trip point, reset

 

Monitor:

Forward/reflected RF level, DC pallet voltage, RF input level, temperature, pallet current, attenuation, run time, RF fault, model/serial number

 

Flags:

Overdrive, VSWR, temperature, SNMP error



         
Touch Screen Interface


Modulator Interface

 

PHYSICAL FEATURES

 

Minimal Rack Space

VHF PA:

3U – 25W/40W; 5U – 100W/250W/500W; 6U – 1kW; 12U – 2kW; Rack - 3kW/4kW/5kW

x 25” (D) x 19” (W)

 

UHF PA:

3U – 40W; 5U – 100W/250W/500W; 6U – 1kW; 12U – 2kW; Rack - 3kW/4kW/5kW

x 25” (D) x 19” (W)

 

Modulator:

2U

Lightweight Enclosures

Aluminum

 

Operating Temperature

0 to +45° C

 

Humidity

90%, non-condensing

Download PDF -  UHF & VHF Digital TV Transmitters