Outline
HPS384A ISDB-T modulator is developed to adapt Japan, Brazil, Argentina and other South American country's terrestrial digital television. The modulator's channel encoding and modulation mode is fully complying with the ARIB STD-B31 standard. This ISDB-T modulator supports four ASI hot backup input, single frequency network, and multi-frequency network. In order to improve the output performance of the transmitter, this ISDB-T modulator also simultaneously supports adaptive linear and nonlinear digital pre-distortion, layered transmission and three transmission modes. Furthermore, this device can be upgraded and controlled through network system, which can be widely used in ISDB-T digital broadcasting network's setting up and set-top box design's production and test.
Features
Fully complying with ISDB-T (ARIB STD-B31) and ISDB-TB standard
4 ASI in, 1 RF in, 10MHz reference clock and 1PPS in
Layered transmission with A, A+B, A+B+C hierarchy modes
ISDB-T BTS input (with IIP packet), support single frequency and multi-frequency network
Three transmission modes: mode1(2k), mode2(4k), mode3(8k)
Supports adaptive linear digital pre-distortion (DPD)
Supports adaptive non-linear digital pre-distortion (DPD )
MER≥42db
RF output range: 30~960MHz with 1Hz step
Constant temperature crystal oscillating and excellent frequency stability (reach up to 0.1ppm)
LCD display, keyboard and SNMP software operation
Specifications
| Input |
4 ASI input, hot backup, BNC interface |
| GPS 10MHz reference clock input, BNC interface |
| GPS 1PPS input, BNC interface |
| 1 RF input for DPD -25dbm~+5dbm |
| Modulation |
Standard |
ARIB STD-B31 |
| Mode |
mode 1(2k), mode 2(4k), mode 3(8k) |
| Constellation |
DQPSK, QPSK, 16QAM, 64QAM |
| External coding |
RS (204,188) |
| Internal coding |
Convolution (1/2, 2/3, 3/4, 5/6, 7/8) |
| Guard interval |
1/4, 1/8, 1/16, 1/32 |
| Hierarchy mode |
A\A+B\A+B+C |
| Time domain interlacing |
mode 1: 0, 4, 8, 16 mode 2: 0, 2, 4, 8
mode 3: 0, 1, 2, 4 |
| Bandwidth |
6MHz, 7MHz, 8MHz |
| RF Out |
Connector |
N Type, 50ΩImpedance |
| RF range |
30~960Mhz,1Hz step |
| Output level ATT |
-26dbm~+3dbm,0.1db step |
| MER |
≥ 42db |
| Non-linear DPD |
over 10db ACPR improvement (normally) |
| linear DPD |
over 10db non-flatness adjustment(normally) |
| System |
LCD display, keyboard and SNMP operation |
| Supporting software upgrading through network |
| General |
Demission (W*L*H) |
440mm×414mm×44.5mm |
| Weight |
4.9kg |
| Temperature |
0~45(operation),-20~80(storage) |
| Power supply |
AC 100V~240V,50/60Hz |
| Consumption |
To be tested |
|
Principle chart
Audited Supplier 
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