RF-Link XL-2000/H - Manual (Page 3)

Changing Channels:
To change channels, simply depress the Toggle/Standby switch momentarily until the
LED for the desired channel pattern is lit up. Remember to change the receiver
channel as well, since it is not automatically changed when the transmitter channel is
changed.
INTERFERENCE
If interference such as lines in the pictures is observed, changing the transmission
channel may cure the problem. In some cases strong signals from wireless network could cause the problem
Also, AC generators in close proximity to the transmitter or receiver may cause lines
in the picture. Move the unit away from the source of the interference.
NO PICTURE
Check that the transmit and receive channels are set the same.
Verify all connectors are tight.
POOR PICTURE QUALITY
Raise transmitter and receiver antennas above ground and away from obstacles and
traffic, including foot traffic. Change the channel or check with a spectrum analyzer if any other source
transmitting. Use only clear channel, not disturbed by other transmitting source.
Use an optional high-gain dish antenna on the receiver. Verify all connectors are
tight. Shorten the receiver antenna feed cable.
RADIO SECTION:
Frequencies:
Channel 1: 2300 MHz
Channel 2: 2325 MHz
Channel 3: 2350 MHz
Channel 4: 2375 MHz
Channel 5: 2410 MHz
Channel 6: 2433 MHz
default channel
Channel 7: 2452 MHz
Channel 8: 2481 MHz
RF Output Power: Nominal: +35dBm ± 3 dB conducted into 50 Ω unmodulated
carrier with final PA on.
Frequency Stability: 0.005% PLL Stabilized (50 ppm) over temperature range
Frequency Plan: Single upconversion with SAW IF filter for bandlimiting, Low
Side LO injection, 479.5 MHz IF
Modulated Bandwidth: 16 MHz (3 dB); 30 MHz (40 dB)
Harmonic Attenuation: > 20 dBc (2nd harmonic)
Spurious Attentuation: > 50 dBc
VIDEO SECTION:
Input Level: 1Vpp per NTSC/PAL standard
Input Impedance: 75
Ω 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 – 10 kHz (3 dB)
Modulation: Wideband FM
Subcarriers: 6.0 MHz and 6.5 MHz
Modulation Index: 1.0 at 11 kHz for audio (±11 kHz deviation)
Pre-emphasis: yes
GENERAL:
Size: 3.4”W x 4.3”L x 1.2”D (8.64cm x 10.9cm x 3.05cm)
Weight: 1.5 lb (0.68 kg)