User Manual

Copyright © 1999 Trango Systems, Inc. All rights reserved.
16
VTX2500 Transmitter: Electrical
RADIO SECTION:
Frequencies: Channel 1: 2413 MHz
Channel 2: 2432 MHz
Channel 3: 2451 MHz
Channel 4: 2470 MHz
RF Output Power: Meets FCC Part 15.249 radiated field strength of 50 mV/m at 3
meters with CP omni or CP patch antenna provided with unit.
Frequency Stability: 0.005% PLL Stabilized (50 ppm) over temperature range
Frequency Plan: Direct carrier modulation
Modulated Bandwidth: 16 MHz (3 dB); 30 MHz (40 dB)
Harmonic Attenuation: > 20 dBc (2
nd
harmonic)
Spurious Attentuation: > 50 dBc
VIDEO SECTION:
Input Level: 1Vpp per NTSC/PAL standard
Input Impedance: 75Ω unbalanced
Modulation: Narrowband direct FM (for composite signal)
Modulation Index: 1.0 at 6.5 MHz for composite A/V signal (±6.5 MHz deviation)
Pre-emphasis: CCIR Rec 405-1
AUDIO SECTION:
Input Level: 1 Vpp Nominal
Input Impedance: 600 Ω
Bandwidth: 50 Hz – 15 kHz (3 dB)
Modulation: Wideband FM
Subcarriers: 6.0 MHz (right) and 6.5 MHz (left-monaural)
Modulation Index: 1.0 at 75 kHz for audio (±75 kHz deviation)
Pre-emphasis: 75 uS