Bird Technologies 8000 Series - Manual (Page 17)

Chapter 4
Operating Instructions
Use and
Function of
Controls
These loads, being passive devices, have no indicators or op-
erating controls.
Initial
Adjustments
No initial adjustments are required other than to connect
the load to the RF source by means of a coaxial cable
equipped with a suitable matching connector plug.
Start-Up
Connect these loads to the transmitting equipment under
test with 50 ohm coaxial cable where necessary (RG-8A/U,
RG-9/U, RG-213/U or equal) equipped with a suitable plug
which mates with the RF input connector of the load. After
the load has been connected to the transmitter, proceed ac-
cording to the transmitter manufacturer’s instructions.
When reconnecting the antenna, it may be necessary to
slightly readjust the transmitter due to possible differences
in VSWR between the load and the antenna system.
Normal
Operation
CAUTION
Do not operate these loads continuously above their
maximum power rating. Load failure will result.
Having no indicators or operating controls, these loads re-
quire no special operating procedures or surveillance when
the stated performance limits are not exceeded.
Operation
Under
Emergency,
Adverse or
Abnormal
Conditions
These units will sustain an input moderately greater than
their maximum rated power for short periods of time. Such
loading must be spaced at reasonable intervals to allow suf-
ficient time for cooling to a safe temperature. Apply the ex-
cessive power for a few minutes at most and allow at least a
half hour for adequate cooling before reapplying power. Be-
cause of the excessive heat generated by overloading, touch
the load with caution to avoid painful burns.
Shutdown
These loads, being passive devices, have no operating con-
trols to be turned off. Their source of RF power must be
turned off instead.
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