Fluke Biomedical 10100AT - Manual (Page 22)

10100AT
Operators Manual
2-4
2.3.1 Ion Chamber Connector
Never connect a coaxial-BNC type cable to the
Model 35050AT Dosimeter's triaxial ion chamber
input connector. Doing so may damage the ion
chamber input connector.
The central pin and inner shield shell of this
connector are operated at 300 volts above the
outer shell and instrument case. Although this
potential is energy and current limited, care should
be taken to avoid unnecessary and possibly
hazardous shocks. Mating and unmating to this
connector (or to the other end of a cable already
connected to it) should be done only when the
instrument is powered down. Within a few seconds
of turnoff, the high voltage is internally discharged
making such connections safe and convenient.
The connector is a triaxial-BNC female with dust cap and chain. It connects to the supplied coax/triax
cable or other low-noise triaxial-BNC male cables. And, by means of which, the Models 96020C Ion
Chamber, Model 96035B Ion Chamber, and other ion chambers can be operated with the Model
35050AT Dosimeter.
The connector is side-mounted to avoid contaminating spills and dust, but putting its dust cap in place
whenever a cable is not connected will help assure long service without leakage problems.
2.3.2 kVp Divider Connectors
The connector is a BNC jack marked with a yellow ring. It is the opposite gender of the usual panel
mounted BNC connector to prevent accidental connection of the triax cable to the BNC connector, and
vice versa. Such a cable connector mix up will damage some or all connectors involved. The male to
female BNC coaxial cable (as indicated by yellow boots) provides the connection between the Model
35080/80A/80B kVp Divider and the Model 35050AT Dosimeter / kVp Readout.
2.4 Power-Up Self-Test and Display Messages
When the instrument is powered up by pressing and releasing the POWER ON/OFF button on the front
panel, the following sequence of screens will be displayed:
1. Pixel test
2. Last calibration and software revision date (5 seconds)
3. Instrument power level in volts and HI, LO or OK advisory (5 seconds). If the unit is operating on
battery power, the displayed battery voltage will be between 5.9 and 9.6 volts. If the unit is powered
by its AC adapter, the displayed battery voltage will be between 10 and 13 volts.
CAUTION
WARNING