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6300 Rev H User's Manual
Figure 3.53 : Encoder (Target Altitude entry)
Enter a new target altitude (which will appear blinking in the Static Target field in the Upper section),
then press GO. It is also possible to jog the current target (up or down) using the arrow keys. Similarly,
the altitude rate target can also be changed or jogged, if necessary.
The ideal way to test an encoder would be to start at -1000 feet, with an altitude rate of about 3000
feet/min. Check the encoder output at -1000 feet, then set the target altitude to the maximum altitude of
the encoder. As the Actual altitude moves up, the flight levels will change and it will be easy to see if
they match the altitude within the expected +/-50 ft band. If necessary, reduce the altitude rate. If a
discrepancy is noticed, or an invalid code ('xxx') is received, change the target altitude to examine the
error more thoroughly. Otherwise, allow the test to continue until the final target altitude is reached.
Note: The power supplied on the Encoder interface connector of the 6300 is +12 Volts DC. If the
encoder being tested requires a different voltage, it will need to be supplied externally. If this is done,
the Ground of the external power supply must be connected to the Ground (GND) pin of the Encoder
interface connector. (See pin-out details in Appendix C).
3.11
INTERNAL-BATTERY OPERATION
If the 6300 has been supplied with an (optional) internal battery, the battery will be capable of operating
the 6300 for up to 8 hours.
The battery can be recharged simply by connecting AC power to the 6300 and turning On the AC On/Off
switch. It is not necessary to turn On the Battery On/Off switch during charging.
Internal fans and ventilating fans will operate during the charging process. The red "Charging" LED will
turn On. When this LED turns Off, it indicates that the charging is complete. Typically it requires 10 to
12 hours to recharge a fully-discharged battery.
Note: The internal charger will not recharge the battery if the ambient temperature (inside the tester)
is below 0
o
C. If the 6300 is equipped with heaters, these will operate to bring the internal temperature
above 5
o
C before the charging is started.
Note: It is possible to operate the 6300 while the internal battery is being charged.
Section 3.2 provides details of the battery-charge percentage that is displayed on the Remote unit while
the unit is in operation.
125-9106A
Page 53
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