Bird Technologies 6091P - Manuale (Pagina 26)

4 °C
Annunciator The °C annunciator lights up to indicate units (degrees Celsius) of the current
readout in the display window (1). The annunciator will remain lighted while
∆
T
pushbutton is pressed.
5 ADD
COOLANT
Annunciator The words ADD COOLANT light up when the coolant level in the reservoir reaches
a low limit. Add coolant whenever this message is displayed.
6 REMOTE
Annunciator The REMOTE annunciator lights up whenever the Calorimeter is in the remote
(GPIB) operating mode. It remains lighted until local mode operation is resumed.
7 BUS ACTIVE
Annunciator The words BUS ACTIVE flash on and off in the display window (1) when the Calo-
rimeter is servicing a GPIB processor request.
8 ADDRESS
Annunciator The ADDRESS annunciator lights up when a GPIB address is displayed in the dis-
play window (1).
9 ON/OFF
Pushbutton Pressing the ON/OFF pushbutton puts the calorimeter into an idle state. The dis-
play will be turned off. Pressing the ON/OFF pushbutton again returns the calorim-
eter to normal operation.
10 FLOW
Pushbutton The FLOW pushbutton selects the flow rate parameter for display. The coolant flow
rate is displayed while the pushbutton is pressed. The “l
/m” annunciator lights up
to indicate that display is in liters per minute. The display will revert to WATTS
when the pushbutton is released.
11 ∆
T Pushbutton Pressing the
∆
T pushbutton causes the temperature differential value to be dis-
played. The value indicates the temperature gradient of coolant passing through
the load resistor. The °C annunciator lights up to indicate that degrees Celsius is
displayed. The display will revert to WATTS when the pushbutton is released.
12 LOCAL /
ADDRESS
Pushbutton When the Calorimeter is in the remote operating mode (GPIB operation), pressing
the LOCAL/ADDRESS pushbutton returns unit control to the front panel. The RE-
MOTE annunciator goes out to indicate when the unit is in local operating mode.
When in the local operating mode, pressing the LOCAL/ADDRESS pushbutton
causes the unit to display current address setting.
13 RF Input
Connector The RF input connector mates with a coaxial RF power cable. The RF power ca-
ble (not provided) connects the Calorimeter with the RF power source for measure-
ment. The RF input connector is a precision 50 ohm, female, type N connector.
14 Air Filter The air filter prevents dirt and dust from entering the Calorimeter housing. The fil-
ter is easily removed for periodic cleaning.
Bird Model 6091 Calorimeter
14