10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110
•
1-5
INSTRUMENT DESCRIPTION
DISPLAY
is a 16 character alphanumeric back-lit LCD. The
first character, a 2, 3 or 4 indicates 2, 3 or 4-wire
measurement. The next four characters will normally be
"WIRE"; however, they will also read "OVER", if over-range,
or "BATT", for low battery voltage. The sixth character is
either blank or an asterisk, which indicates auto-range. The
next seven characters display the resistance reading (six
digits and the decimal point). Note that while auto-ranging,
this block of characters will read "RANGE". The final
characters (to the right) display the Ω symbol, with the
prefix k or m, as required for kΩ or mΩ.
Note that although the front panel lists the two lowest
ranges as 0.2 and 2 Ω for the sake of simplicity, the display
shows them as 200.000 and 2000.00 mΩ. Also, as is typical
of digital voltmeters, full scale readings are rounded off as
2xxx, but actual full-scale readings are 1.99999, etc.
A front panel LED marked "AC POWER" indicates that AC
power is connected.
A front panel LED marked "BATTERY CHARGING" indicates
that the battery is in fast charge mode. If the unit is
connected to AC power and this LED is not on, the Batteries
are in trickle charge mode.
Four binding posts
for connection of test leads are marked
+I, +E, -E, and -I. Proper connections to the resistor under
test are described in Section 2.2 below.
