Outdoor Broadband Repeater – Model: OAR02-010
IM456213-10 Rev –
12
4.0 OPERATION
The OAR02-010 requires no adjustments other than the total gain for a given input signal
level. To properly operate the repeater, simply apply the required AC power and
microwave input signal. The OAR02-010 repeater can be equipped to operate on either
120 or 240 VAC at 50 or 60 Hz. This option is specified by customer request, and each
unit is shipped according to this specification.
The required output power is achieved by adjusting the AGC until the output level
appropriate to the number of channels is achieved. This is accomplished by first adjusting
the receive antenna for maximum output signal (as measured at the output of the test
input VHF monitor), then adjusting the AGC set-point for the required output level in
accordance with the specifications.
IT IS NOT RECOMMENDED TO CHANGE OR ADJUST THE TRANSMITTER OUTPUT
LEVEL UNLESS THERE ARE SIGNIFICANT CHANGES IN THE NUMBER OF INPUT
CHANNELS OR OTHER SYSTEM PARAMETERS.
4.1 Output Level Setting / Antenna Alignment
This operation requires field strength meter.
With the field strength meter attached to the “ INPUT MONITOR”, align the antenna until
you receive the maximum VHF signal. Use the table 6.0 in the OAR02-010 data sheet to
verify the calculated input to actual input.
Move the field strength meter to the “OUTPUT MONITOR” and verify the actual measured
VHF data to the data sheet. The AGC voltage should also correspond.
4.2 Ambient
Conditions
The OAR02-010 repeater is designed to operate outdoors in a variable temperature
environment. An external cooling heat sink maintains component temperatures at
desirable levels when ambient conditions described in Section 6 of this manual are met.
4.3 Thermal Sensor Switch
To protect the power amplifier from overheating a temperature sensor automatically cuts
off AC input to the amplifier when the temperature exceeds a factory set threshold of 158
degrees F.
