DVB-C DIGITAL SIGNAL LEVEL METER

LM8551 /  LM8553

Main Specification

Analogue Signal SPECIFICATIONS

LEVEL

Frequency Range :                   46-870MHz

◆ Resolution Bandwidth:              280KHz ± 50KHz

◆ Channels:                              All Channels

Level Range :                          35dBμV — 115dBμV

◆ Accuracy:          ±1.5dBuV(under room temperature)

                             ±2.5dBuV(- 10 - + 40℃ )

◆ input impedance               75Ω(BNC or F connector)

◆ Wave detection                         Peak value

AUTO SCAN TESTING

■ Max  Channel Scan:                   100 Channels

Scan Range :              All Channels within 46-870MHz

■ Scan Speed:                           30 Channels/Min

■ Memory Groups:                      23 Groups(00-22) 

                             Each group store Max 100 Channels.

VOLTAGE

Voltage Range                          0 -- 100VAC

◇ Accuracy:                                    ±1.5V

◇ Resolution                                     0.1V

C/N (the measure result is only for reference, not accuracy result)

     Level Range :                          80dBuV – 105dBuV

 

DVB SPECIFICATIONS:

(HT8551 without EVM function ,and without constellation diagram)

 

Frequency Range

46MHz870MHz

Frequency Resolution

10KHz

Frequency Accuracy

±10106

Average Power

35dBμV115dBμV

Power Resolution

0.1dB

Power Accuracy

±2.0dB(under room temperature)

Input impedance

75Ω

MER

2239dB

MER Accuracy

±2dB

EVM

BER

1E-4~1E-8(after RS)

Modulation

16/32/64/128/256QAM

Constellation Diagram

 

 

 

 

 

OTHERS

     ▆ Dimension:                          215mm x 95mm X 47mm

     ▆ Weight:                               610g (without charger)

     ▆ Working Temperature:                 -10℃ - + 40℃

     ▆ Display LCD: 128X64 Matrix Super big LCD with back light

POWER

▋ DC Supply:             DC 7.2V/1.6Ah rechargeable battery

▋ AC Supply:                            AC 220V/50Hz±10%

Battery working hours: longer than 4.5 hours at continuous working mode

▋ Recharging hours:                        12 - 14 hours.

ACCESSORIES

★ Battery Charger:                        charger 1pc

★ RF Input Port:                             F type  2pcs

★ User Manual                                1 copy

 

 

  

 

 

 

Email: sales@china-electronics.com

 

 

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