14
ZM305 GTN Inbound-Outbound User Instructions
Introduction
2.2 Powering up the ZM305
The indicator is always active as long as power is received. Power can be supplied by:
l
AC power cord connected to a properly grounded outlet (100 VAC - 240 VAC,
50 or 60 Hz)
l
ZM-BAT - Optional external non-charging battery pack with 4 D cells
l
DC power source (12 to 36 VDC)
2.3 Entering a negative number
To enter a negative number, press the
C
key to clear the current value from the display.
With only one digit displayed press
SELECT
. The first character will be the (
-
) negative
sign. Enter the rest of the digits normally.
