ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ
Input streams
Interface:
2 x ASI (EN 102 773)
1 x IP (SMPTE-2022 – UDP, RTP and FEC)
TS mode: (188-bytes packets) Layer A only
BTS mode: Layers A, B and C
Switching: Automatic and seamless between any two BTS inputs in SFN mode. Automatic in MFN mode. In both modes the switchover may be permanent or temporary
RF Output
Frequency Range: 30 to 900 MHz
Output level: -20 dBm to -40 dBm
Return Loss: > 20 dB
Spectrum Polarity: Inverted / Normal
Harmonics and Spurious: > 60 dB
MER: > 44 dB
Synchronisation
MFN: External or Internal 10 MHz
SFN: External 10 MHz and 1 pps
Transmission modes
Modes: Mode 1, Mode 2 and Mode 3
Guard Interval: 1/4, 1/8, 1/16 and 1/32
Code Rate: 1/2, 2/3, 3/4, 5/6 and 7/8
Constellation: DQPSK, QPSK, 16-QAM and 64-QAM
Time Interleaving :I=0,4,8,16 (Mode 1), I=0,2,4,8 (Mode 2) and I=0,1,2,4 (Mode 3)
Others: Estimates of the primary and secondary TS network delay margins
SFN Delay insertion
Local delay: Adjustable between -50,000.0 µs and +50,000.0 µs with 100-ns resolution
Test modes
PRBS: Modulates 23-bit PRBS-filled NULL packets
Blank Carrier: Carriers are blanked between two configurable values
NULL first symbol: First symbol of every frame is zeroed
Single RMS tone: Tone at central frequency with the same RMS power as the ISDB-T/TB signal
Signal predistortion
Crest Factor Reduction: Enable/Disable
Range: 8 to 11 dB
Resolution: 0.1 dB
Non linear predistortion: Enable/Disable
Number of points: From 2 to 16. Linear interpolation
Table AM-AM Input Amplitude: -12 dB to +12 dB / Output Amplitude: -6 dB to +6 dB
Table AM-PM Input Amplitude: -12 dB to +12 dB / Output Phase: -30° to +30°
AM Resolution: 0.1 dB
PM Resolution: 0.1°
Linear predistortion: Enable/Disable
Number of points: 72. Linear interpolation
Amplitude Correction: From -6 dB to +6 dB
Group Delay Correction: From -1500 to +1500 ns
Amplitude Resolution: 0.01 dB
Group Delay Resolution: 1 ns
POWER SUPPLY: 12 V DC 1.8 A
Dimensions: 116 (W.) x 61 (H.) x 258 (D.) mm
Weight: 1.57 kg
