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Antenna installation and setup
9 Power up only the desired channel TX and establish a setup simulating the expected
conditions during actual operation.
Example: If the TX is the DWM-01, it should be held in the hand, close to the mouth.
If the TX is the DWT-B01, it should be worn on the hip.
* Equipment other than TX (RX, boosters, etc.) should be constantly on.
10 Move the desired channel TX throughout the service area, and check for the presence of
obstructions, dropout points, and body effect.
Sample settings for checking
Band to use: Band established in Step 1.
Group to use: Group established in Step 1.
Antenna installation location/orientation: To be determined in this step.
Antenna gain: To be determined in this step.
Number of antennas: To be determined in this step.
TX RF power: 1 mW
RX attenuator: 10 dB
Checking procedure
Check that the RF indicator is lit green.
* In this step, we recommend adjusting the setup, direction, and number of antennas to obtain the highest possible RF level.
11 Even at points with weak RF levels, optimize the antenna setup conditions so that the RF
level is at its highest, and check the service area again.
Determining the antenna installation location/orientation:
As close as possible to service area *
As far as possible, ensure direct line of sight to TX (directional antennas should be pointed to the
farthest point of the desired area)
As far as possible, antennas should overlook service area
Adjust antenna location/orientation to maximize the service area.
Determine antenna gain*
high)
Determine number of antennas: 2, or 4
*1 Too short distance between TX and antenna can also result in reception degradation, due to RF input overload and third-
order intermodulation distortion. Recommended TX to antenna distance for 3-channel operation is about 3 meters, and for
10-channel operation 5 meters or more.
*2 Antenna gain must be set to the same value on both antennas, to obtain the diversity effect.
*3 When using the AN-01 antenna, you can set gain on the antenna to "Auto" and control gain by switching the DWR-R01D
booster power supply voltage. This makes it easier to change settings also after installation. (AN-820 supports Auto only.)
1
2
*
3
: 0 dB, 10 dB, or 18 dB (should cover cable loss but not be excessively
Making and Checking RF Settings (UHF)
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