Tektronix LumaColor II J18, Instruction Manual

Page: 21 / 114

J18 Photometer Instruction Manual 1–3
Power Options
The J18 may be powered by either of two sources:
H
A non-rechargeable nine-volt alkaline battery
H
An external AC power adapter, available as an optional
accessory. (See the Replaceable Parts section for information
about available accessories.)
NOTE
. When switching between power sources, cycle the photometer
power off and then on again to enable the photometer to auto-zero
using the new power source.
Low Battery Warning
When battery voltage is below 7.2 volts, the J18 displays the flashing
warning battery icon in the upper left corner of its display. At this
point, you should replace the battery (see Figure 1–1).
HOLD REF
+ –
The battery icon flashes
when the battery voltage
drops below 7.2 V.
Figure 1–1: Low Battery Warning Icon
If the battery voltage is below 7.2 volts at initial power-on, the J18
will not complete the self-test.
J18 Photometer Instruction Manual 1–3
Power Options
The J18 may be powered by either of two sources:
H
A non-rechargeable nine-volt alkaline battery
H
An external AC power adapter, available as an optional
accessory. (See the Replaceable Parts section for information
about available accessories.)
NOTE
. When switching between power sources, cycle the photometer
power off and then on again to enable the photometer to auto-zero
using the new power source.
Low Battery Warning
When battery voltage is below 7.2 volts, the J18 displays the flashing
warning battery icon in the upper left corner of its display. At this
point, you should replace the battery (see Figure 1–1).
HOLD REF
+ –
The battery icon flashes
when the battery voltage
drops below 7.2 V.
Figure 1–1: Low Battery Warning Icon
If the battery voltage is below 7.2 volts at initial power-on, the J18
will not complete the self-test.