Revision 2.2
Specifications
3-1
3. SPECIFICATIONS & FREQUENCY PLANS
Table 3-1 ChannelMaster TX1 Specifications
RF Performance:
Frequency Bands:.................................... bands from 1.9 GHz to 13.25 GHz available
(higher frequencies pending). Multi-band
models available. Please contact Nucomm for
specifics.
Tuning step size: ..................................... 250 kHz (US), 100 kHz (International)
70 MHz input:........................................... –10 dBm to 0 dBm (75 )
Frequency stability: ................................. ± 5 ppm (.0005%)
Power Output
Standby mode:
Standby: ............................................ No RF output
Normal: .............................................. HI power = Full power
.............................................. LOW power = 3.5 dB drop (typical)
Modulation Modes
Standard selectable:
Modulation 1: .......................................... COFDM: QPSK, 16QAM, 64 QAM
Code Rate: .......................................... 1/2, 2/3, 3/4, 5/6 and 7/8
Guard Interval: .................................... 1/32, 1/16, 1/8, 1/4,
Bandwidth: .......................................... 6 MHz, 7 MHz, and 8 MHz
Number of Audios:............................... Two audio standard; Four audio available
Data Rates: ......................................... to 32 Mbps
Modulation 2: Analog FM
Two field tunable sub-carriers; 4 available
Analog Modulation Deviation, selectable: ......................3 MHz/volt or 4 MHz/volt
Modulation 3: .......................................... VSB: 2VSB, 4VSB, 8VSB, 8VSBT
(Other modulation formats available with optional download.)
Video & Digital Input Performance:
Video: ...................................................... 525/625 lines NTSC/PAL field selectable
Pre-emphasis: ..................................... (Analog) NTSC/PAL-B,G or M LCD selectable
(CCIR 405)
Video Low-Pass-Filter LCD selectable: .....................3.9 MHz, 4.5 MHz, 4.75 MHz, and
5.6 MHz
Frequency Response: ......................... ± 0.25 dB (10 Hz to video filter selected)
Base-Band Response: ........................ ± 0.50 dB (10 Hz to 9 MHz)
Signal-to-noise ratio: ........................... 69 dB typical (65 dB minimum)
Differential Phase: .............................. ± 1.0 degrees
Differential Gain: ................................. ± 1.0 %
SDI Video: ............................................... SMPTE 259M Level C De-Embedded Audio
DVB-ASI: ................................................. Data Rates to 31.66845 Mbps
Input impedance: .................................... 75
Return loss:.............................................. –26 dB (10 Hz to 5 MHz)
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