Key facts
- Manuals
- 4
- Languages
- EN
- Last added
- 2012-06-07
Featured Promax manuals
Promax MO-170 DVB‑T Modulator User Manual
The MO-170 is a multi‑purpose DVB‑T/DVB‑H modulator that provides a complete test suite for measuring various points in a digital terrestrial TV signal chain. It offers internally generated test transport streams, carrier blanking, single‑carrier generation, and controlled insertion of errored bits to emulate specific BER conditions.
Additional features include selectable white Gaussian noise, up to six‑tap multipath channel simulation, frequency agility of 1 Hz steps, and user‑selectable channel bandwidths of 6, 7, or 8 MHz. The device can operate in master/slave and hierarchical modes, and it provides precise C/N control from 3 dB to 40 dB in 0.1 dB steps.
Covers: Testing DVB‑T & DVB‑H · Test Transport Stream · Signal level alignment and in‑band noise measurements · Blanking a set of contiguous carriers · Getting your Bit Error Ratios right · Fixed/mobile multipath channels
Promax MO-270 User Manual
The MO-270 is a DTMB modulator that complies with China’s GB20600‑2006 standard for digital terrestrial broadcasting. It accepts MPEG‑2 transport streams via two ASI inputs or one SPI input and can generate a test transport stream internally.
The unit provides a 36 MHz IF output and an RF output that is frequency‑agile from 45 MHz to 875 MHz in 1 Hz steps, with selectable normal or inverted spectrum. Configuration is performed through a front‑panel LCD and rotary control, and the device includes Ethernet connectivity and status LEDs.
Covers: General overview · Detailed description · SPECIFICATIONS · INPUTS · OUTPUTS · DTMB PARAMETERS
Latest Promax manuals
PROMAX JOHNTON PJ5800/A Series handbook
The PJ5800/A series are highly precise, low ground current and fixed output voltage regulators manufactured using CMOS process. The series provides large currents with a significantly small dropout voltage. The PJ5800/A consists of a current limiting circuit, a thermal limiting, a precision reference voltage and an error amplifier provide maximal protection against any fault conditions. Output voltage ranges are adjustable, 1.5V, 1.8V, 2.5V, 3.3V; TO-252 (1W), SOT-89 (500mW) and SOT-223 (800mW) packages are available.
Promax MO-170 DVB‑T Modulator User Manual
User Manual 2 pages · 624 KB · ENThe Promax MO-170 User Manual explains how to use the DVB‑T/DVB‑H modulator for signal testing, noise generation, and channel simulation.
Promax MO-270 User Manual
User Manual 2 pages · 121 KB · ENThe Promax MO-270 DTMB modulator converts MPEG‑2 transport streams to TDS‑OFDM signals with selectable RF output from 45‑875 MHz.
Promax TV Television The Surveyor II + top of the world Level Of signal analyser Manual
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Promax manuals
What test modes are available on the MO‑170?
The MO‑170 can generate an internal test transport stream, perform carrier blanking, generate a single carrier, and insert errored bits to emulate a given BER.
How does the MO‑170 add noise for testing?
It can add white Gaussian noise with selectable C/N values, allowing noise levels from 3 dB to 40 dB in fine steps.
How can the RF output frequency be set?
The RF output frequency can be adjusted from 45 MHz to 875 MHz in 1 Hz steps using the front‑panel controls.
How is the device controlled and monitored?
Control is via a push‑rotary front‑panel knob with an LCD display, and two LEDs indicate power and synchronization status.