Справочник Пользователя для Integrated Microwave Technologies LLC. 23UHPA-P10
Revision 0.1
ChannelMaster Truck Package (PS18 & HPA/UHPA)
24
4.2.
Control Unit Section
The Control Unit section serves two purposes: the selection of which power amplifier is to be used,
and the monitoring of RF output power. The selection of amplifier is accomplished by pressing the
“Band” Button. The “Band” Button toggles the unit between enabling the 2GHz Amplifier and
the 7GHz Amplifier. This feature will still work even if the unit is placed into Bypass Mode.
and the monitoring of RF output power. The selection of amplifier is accomplished by pressing the
“Band” Button. The “Band” Button toggles the unit between enabling the 2GHz Amplifier and
the 7GHz Amplifier. This feature will still work even if the unit is placed into Bypass Mode.
For monitoring RF output power, a bar indicator is located just above the “Band” Button. As the
output power increases, so will the length of the bar indicator. However, there is no direct number
representation.
output power increases, so will the length of the bar indicator. However, there is no direct number
representation.
4.3.
Antenna Section
The upper most rotary switch in the Antenna Section, allows the operator to choose the type of
antenna to be used. The operator can choose between either “Omni” or “Directional”. If
“Directional” is chosen, the operator then must set the lower most rotary switch for the type of
polarization to be used with the antenna.
There are four options:
antenna to be used. The operator can choose between either “Omni” or “Directional”. If
“Directional” is chosen, the operator then must set the lower most rotary switch for the type of
polarization to be used with the antenna.
There are four options:
•
CW - Clockwise
•
CCW - Counter-Clockwise
•
V - Vertical
•
H - Horizontal
4.4.
Power Section
The Power Section allows the operator to select the unit’s mode of operation.
For choosing the unit’s mode of operation, the lower rotary switch can select one of three
conditions:
For choosing the unit’s mode of operation, the lower rotary switch can select one of three
conditions:
• OFF - The entire Control Unit is powered-off.
• BYPASS - The Mast Mounted Power Amplifier is powered down, while the RF signal
from the ChannelMaster is sent directly to the antenna via the Power Amp Bypass
Relays. Bypass Mode is used to further reduce the RF Power Level sent to the Antenna.
Relays. Bypass Mode is used to further reduce the RF Power Level sent to the Antenna.
• ON - Allows the chosen power amplifier (refer to “Band” Button) to amplify the RF
output signal being applied to the Antenna.
If “ON” is chosen as the unit’s mode of operation, the amplifier mode of operation must then be
selected. This is accomplished by pressing the upper toggle button until the desired amplifier
mode is decided upon. There are three options:
• HI - places the Mast Mounted Power Amplifier in high power operation.
• LOW - places the Mast Mounted Power Amplifier in low power operation.
• STBY - places the Channel Transmitter in Standby Mode.