10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110
3-1
OPERATING INSTRUCTIONS
SECTION 3
OPERATING INSTRUCTIONS
The R1L-BIR1 is designed for field or bench-top operation. Use
appropriate cables connecting their terminations to the four
binding posts I, +E, -E, and -I.
WARNING
DO NOT TOUCH THE BINDING POSTS WHEN THEY ARE
CONNECTED TO EXTERNAL CIRCUITS. LETHAL VOLTAGES
MAY BE PRESENT AT THESE POSTS.
3.1 Rotary Switch Functions
Operation of the Model R1L-BIR1 is simple. There are only two
switches.
The RANGE rotary switch manually scrolls through the five
ranges.
Full scale on any range may be described as 2,000 counts
(actually 1,999), since this is a 3½ digit meter. If the readings
are exceeding 1,999 counts, step to the next higher range. If
the readings are less than 2,000 counts, step down a range,
so that it will read 1,999 counts, or less. The decimal point is
located automatically for the correct reading.
If the selected range is too low for the value of the resistor
under test, the display will show over-range.
The POWER rotary switch turns on the power to operate the
unit or turns off the power to the unit. The appearance of the
display will show that power is on; absence of the display
indicates that either power is off, batteries are discharged, or
there is some malfunction. Note that when power is turned
off, it may take several seconds to discharge circuit capacity
to completely blank the display. The black markings seen have
no effect and disappear when power is turned back on.
