Promax 4,5,6 Features

• Frequency Range
  • 45 to 862 MHz (PROMAX 4)
  • 5 to 862 MHz (PROMAX 5 and 6)
• One Channel Plan, Configurable From PC Through RM-006
• Resolution 62.5kHz
• Measurement Range:
  • 40 dBmV to 60 dBmV (PROMAX 4)
  • 35 dBmV to 60 dBmV (PROMAX 5 and 6)
• Carrier to Noise Range From 40-50 dB
• Analog Channel Measurements
• LCD Alphanumeric Display with Back Lighting
• Sound: AM/FM
• Internal Speaker/External Headphones
• Hard Carrying Case
• Fast Charger
• Cellular Battery

PROMAX 4,5,6 Description

The PROMAX4, PROMAX5 and PROMAX6 analyzers are designed for the installation and maintenance of television signal reception and distribution systems. They are especially suited for cable television systems, since they integrate all the basic functions required for signal analysis in an easy-to-use, accurate, and low-cost device.

While the PROMAX-4 offers coverage of all television channels between 45 MHz and 862 MHz, the PROMAX-5 and 6 also cover the return channels (5 MHz to 862 MHz). All models enable the signal level to be measured with high accuracy.

PROMAX 4-5-6 incorporate a series of functions for evaluating the image quality, and include a calculation of the Video/Audio (V/A) ratio and the Carrier/Noise (C/N) ratio in the Channel (Patented Method). In addition to providing all of these functions, the instruments weigh just half a kilo. Every detail has been carefully studied in order to achieve optimum balance between the characteristics and their functionality. The result is an easy-to-use device with advanced functions that can be operated by non-specialist personnel.

Direct reading 
All three instruments have a dynamic range from 20 dBµV (-40 dBmV) to 120 dBµV (60 dBmV). In order to achieve a direct reading of the signal level, the measurement is automatic and the device itself selects the input attenuator most suitable for each signal. In applications for which a value must be set for the attenuators, the Manual mode may be used. The units may be displayed in dBµV or in dBmV.

Selection modes 
A rotary selector allows any one of the three tuning modes to be selected: Frequency, Channels or Programs. The Frequency mode allows you to tune into any frequency between 5 and 862 MHz (between 45 and 862 MHz for the PROMAX-4) with a resolution of 62.5 kHz.

Access by Channel depends on the channel plan selected. Tuning by Programs enables direct access for up to 64 channels. The number of programs may be limited to adapt the measuring cycles to the capacity of the network.

Video/Audio Measurement 
The V/A ratio indicates the relationship between the level of the Video carrier and the Audio carrier. There are certain optimum values for each standard.  Very often, the audio carrier levels are not checked when the installation takes place. Sometimes it is taken for granted that it is enough to check the demodulated audio signal, but it should be noted that an unsuitable V/A ratio may cause interference in the video.

Carrier/Noise Measurement 
Carrier/Noise Measurement is another factor in evaluating the signal quality. The C/N function measures the ratio between the carrier level and the noise level. PROMAX has developed and patented a method for calculating this ratio in the channel in which the measurement is made.  It is not rare that a signal with a higher carrier level than another may have a lower C/N ratio, so this measurement is essential.

Safety 
The PROMAX-4, -5, and -6 have been designed according to the requirements of the European standard on electrical safety, EN61010-1.  The recommendations regarding the level of protection against water and dust in the outside materials have also been taken into account and incorporated to level IP21.  As with all PROMAX devices, they also comply with the regulations on electromagnetic compatibility, EN55014, regarding radio interference.

Multi-Standard Audio 
A highly efficient speaker allows the demodulation of FM or AM audio. They also include a tone that is proportional to the signal level.  In addition, it is possible to select the audio carrier frequency anywhere from 4 to 9 MHz, so that the device can be used for making measurements with any television broadcast standard.