Triplett 9007 - Manual (Page 25)

Page 24
7.3.4 If the display indicates overrange, i.e. “1- - -”, disconnect the
test probes from the circuit and rotate the RANGE switch to the
next higher position. Reconnect the test probes to the circuit
and observe the reading on the LCD display. If the RANGE
switch is already at the highest position (i.e. 1000 VDC), the
input voltage exceeds the measurement capability of the meter
and should not be measured.
7.3.5 If the displayed value is less than “200” (decimal point not
shown), a more accurate reading may be obtained by setting
the RANGE switch to a lower range. Disconnect the probes
from the circuit and rotate the RANGE switch to the next lower
position. Reconnect the test probes to the circuit and observe
the reading on the LCD display. If the RANGE switch is already
on the lowest position (i.e. 200m VDC), no greater
measurement resolution can be obtained.