SABINE TRUE MOBILITY WIRELESS SYSTEM SWM3000, Руководство по эксплуатации, Страница: 29 / 40

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B2-SWM-Op-Guide-v4.pmd 030108-hto
SECTION TEN : MULTIPLE FREQUENCY & USE CHARTS
SECTION TEN : Multiple Frequency & Use Charts
10.1 UHF Frequency Code U3 [USA]
SWM-3000 UHF transmitters and receivers have both Group and Channel selector knobs. The channels
within each group have been arranged so that you can use up to 14 wireless units at a single location
without having the units interfere with each other.
In general, use channels from within the same group to avoid interference. For maximum
number of units, see Example #2 below.
EXAMPLE: The 8 channels within group 1 are all compatible. To use 8 UHF units at a single location,
set the receivers and transmitters as follows:
Transmitter/Receiver GROUP CHANNEL
unit #1 1 1
unit #2 1 2
unit #3 1 3
unit #4 1 4
unit #5 1 5
unit #6 1 6
unit #7 1 7
unit #8 1 8
EXAMPLE: To use the maximum number of 14 units together, use all 7 channels of GROUP 3,
plus all 7 channels of GROUP 4.
NOTE : To avoid intermodulation distortion (IMD) interference, all transmitters must be kept at
least 5 meters from any True Mobility UHF receiver antenna.
CHANNEL (MHZ)
GROUP
Minimum
distance to
receiver
1 2 3 4 5 6 7 8
1 914.275 914.900 916.375 916.725 920.200 921.200 926.800 929.875 3m
2 915.150 916.125 917.925 922.650 924.075 924.775 928.125 928.500
3 914.250 915.475 918.275 919.450 925.575 926.650 929.150 5m
4 915.075 917.875 919.050 925.225 926.300 928.750 929.925
Frequencies in USA 900 MHz UHF Systems
U1 = U794A (786.275 - 801.925) U3 = U922A (904.275 - 928.5)
U2 = U808C (802.675 - 815.95)
V1 = VND1 (200.35 - 202.6) V3 = VPD2 (202.25 - 204.5) V5 = VPH5 (247.05 - 249.3)
V2 = VND2 (201.75 - 204.0) V4 = VPE4 (215.2 - 217.45) V6 = VPH4 (245.8 - 248.05)
Guide to new/old Frequency Code designations
U U
U U
U
H
H
H H
H
F
F
F F
F
V V V V V
H
H H H H
F
F F F F