emitor DIGIAIR PRO C User Manual Download Page 7

 

7

 

2.2 Digital-information 

(view digital)

  

PRE- and POST- BER (Bit Error Rate) and C/N (Carrier/Noise) is presented in 
this mode. 
The BER should be as low (less errors) as possible. The SNR should be as 
high as possible (the signal coming out of the noise as much as possible). 
In order not to be confusing both digital bars should be as high as they can be. 
Signal-level shall increase from left to right. 

 
 

More, very useful, digital info can be readout when pushing the 

“OK

” button in 

this mode. 
The following display will be shown on the LCD 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
CH = The selected channel (measured at) and frequency. 
 
DVB-T type: 

 

DVB-T or DVB-T2 

Demodulation type  

COFDM, 16 QAM , 64 QAM, 256 QAM or QPSK  

Transmission: 

 

1K to 32K  

Guard ratio: 

 

Between 1/4,and 19/256  

Hi-priority code rate: 

Between: 1/2 and 7/8 

Low-priority code rate 

Between 1/2 and 7/8 

MER (Modulation Error Rate)  Between 10 dB and >31dB 

 
DVB-C type: 

 

DVB-C 

Demodulation type  

From QAM16 to QAM256  

Symbolrate (approx). 

2.3 Multi channel-mode 

(view six channels) 

In this mode the meter measure the signal strength of six individually selected 
channels. DIGIAIR Pro T2 can be set up with five such pages of six channels 
(5x6 channels). The page number is indicated in the top-right corner. To scroll 
through the pages use the 

UP/DOWN 

buttons. To show/hide the channel 

numbers use the 

OK 

button. The max-peak values are reset when changing 

page.  

2.4 Spectrum-mode 

(view spectrum) 

In this mode the meter shows all the channels between 45 MHz to 860 MHz. 
One pixel-line represents one channel.  
Move the cursor (the animated dotted line) with the 

UP 

and 

DOWN 

buttons 

and place it over a “peak” (channel).  

Summary of Contents for DIGIAIR PRO C

Page 1: ...DIGIAIR PRO T T2 C USER MANUAL...

Page 2: ...trial antennas for DVB T and DVB T2 It is also intended for fast and accurate readout in Cable TV networks DVB C It can measure analog dBuV digital DVB T T2 COFDM and digital DVB C QAM DIGIAIR Pro T T...

Page 3: ...turn the unit OFF when the unit is fed by an external power supply simply disconnect the power source A discharged battery takes about 14 hours to recharge The recharging is controlled by the units mi...

Page 4: ...rmometerscale reaches 100 it can easily be attenuated with a push on the OK button about 20dB 1 4 Digital Mode DVB T T2 or DVB C Press down the mode button again when the antenna is pointed in the rig...

Page 5: ...POST BER value after demodulator corrections increases in correspondence with the increasing of the PRE BER value In DVB C mode the meter will show C N Carrier Noice This value should be as high as po...

Page 6: ...e mode button will take the meter back to Singlechannel mode 2 Description of functions 2 1 Single channel mode view one channel In this mode the meter measure analog signal strength on the selected c...

Page 7: ...tween 1 4 and 19 256 Hi priority code rate Between 1 2 and 7 8 Low priority code rate Between 1 2 and 7 8 MER Modulation Error Rate Between 10 dB and 31dB DVB C type DVB C Demodulation type From QAM16...

Page 8: ...Antenna voltage in the main menu and select 0V 5V 12V or 24V to be fed to the ANTENNA port The power to the antenna port is changed immediately when the OK button is pushed even if you are in the main...

Page 9: ...the UP DOWN buttons Press the MODE button to open up the memory position The channel nr will start to flash faster Set the new channel with the UP DOWN buttons Press the MODE button and the new chann...

Page 10: ...Error Rate after demod correction C N Carrier Noise MER Modulation Error Rate in analog One bar showing dBuV in high resolution or six bars showing strength of six channels Spectrum display with zoom...

Reviews: