Bird Technologies 6091P - Manuale (Pagina 28)

3. Press and hold the FLOW pushbutton. Coolant flow rate will be dis-
played. Flow rate must fall between 0.284 and 0.473 liters per min-
ute. Refer to chapter 5 - Maintenance if the flow rate is outside of
these limits.
WARNING
Never attempt to connect or disconnect RF cables while RF power is on. Radiated RF is a
potential health hazard.
CAUTION
Do not apply RF power to the load without proper coolant flow. Failure to keep coolant at
proper flow rate can result in serious damage to the equipment.
4. With the Calorimeter unit running, connect the RF power source to
the RF input connector. The connecting cable should be as short as
possible. Use a high quality, 50 ohm coaxial cable such as RG 11/U.
Normal Operating Procedures
In normal operating mode all controls and indicators are used when operating the
calorimeter. RF power readings will be displayed on the front panel display window,
refer to figure 9 for identification. Coolant flow rates and temperature differential
measurements can also be displayed to assist with maintenance checks. Before oper-
ating the Calorimeter read and become familiar with the shutdown procedures in
this chapter.
CAUTION
Do not apply RF power to the load without proper coolant flow. Failure to keep coolant at
proper flow rate can result in serious damage to the equipment.
Measuring RF
Power
1. Make sure the RF power source is connected and the startup proce-
dures have been followed.
2. Turn on the RF power source. The Calorimeter will display an RF
power reading. The corresponding Watts unit of measure annunciator
lights when the power measurement is within 3% of its final value.
For large changes in power, this can take up to three minutes.
+
Note: The Calorimeter is a broad band power meter that will measure the resul-
tant power of all signal components up to 2500 MHz. Make sure to filter all un-
wanted signal components out before they reach the input connector.
Bird Model 6091 Calorimeter
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