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| | GHM-J1 | GSM-J1 | |
GSM-J1
• ISDB-T(ARIB STD-B31) Compliant transmiter for Digital Terrestrial Television
• No hierarchical transmission
• Configurable code Rates : 1/2, 2/3, 3/4, 5/6, 7/8
• QPSK/ 16 QAM/ 64 QAM symbol Mapping
• Configurable support for 2K,4K and 8K FFT
• Configurable Guard Interval : 1/4, 1/8, 1/16, 1/32
• Support Channel Bandwidth 6MHZ
• MER >30 dB
• Carrier Suppression > 40 dB
| Parameter | Value |
| Source input | ‧Input Channel : 1 ‧Video : CVBS ‧Video System : NTSC ‧Video input level : 1Vpp @ 75 ohms ‧Audio input level : 0.5 - 2Vpp @ 10Kohms ‧Audio system : 2 x Mono (stereo) ‧Bandwidth : 20 Hz to 20 KHz |
| Compression | ‧Video : MPEG2 MP@ML ‧Video Resolution : 720 x 480 (30fps) (NTSC) ‧Video Bit rate : 6Mbps@64 QAM / 160QAM, 3Mbps@ QPSK ‧Audio : MPEG -2 AAC ‧Audio Bit rate : 96 – 384 Kbit/S ‧DVB insertion tables : SDT, NIT ‧Editable field : Service Name, network_id, NIT |
| Modulation | ‧Standard : ISDB-T(ARIB STD-B31 v1.6) ‧Constellation : QPSK, 16QAM, 64QAM ‧Guard Interval : 1/4, 1/8, 1/16, 1/32 ‧Code Rate : 1/2, 2/3, 3/4, 5/6, 7/8 ‧FFT Carrier Mode : 2K, 4K, 8K ‧Bandwidth : 6 MHz |
| RF Output | ‧Type : 1 Multiplex ISDB-T with a digital TV service ‧Frequency : VHF:1-12/ UHF :13-62 ‧MER : >30 dB ‧Output level : 100 dBuV ‧Attenuation : -10 dB ‧Attenuation step : 1dB per step |
| Connections | ‧Video : RCA female (yellow) ‧Audio, L/R : RCA female ( L : white, R : red) ‧RF Output : 1 ISDB-T RF output with type F female ‧SD : S/W Update |
| Power Supply | 6W @5V |
| Display | LCD panel @ 2 x 16 characters (on front panel). |
| Configuration | 6 Local keys on front panel : |
| Environmental for operating | ‧Temperature : 5℃- 40℃ ‧Relative Humidity : 80% @ 30℃ |
