Power Considerations (18-0015) AM-48 Test Set
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NiCad Batteries . Commercially available AA size Nickel Cadmium
(rechargeable) batteries can be used, but operating life will be
reduced to approximately 3 to 4 hours because of the limited energy
storage capacity of rechargeable batteries. Due to the abrupt end-of-
life discharge curve of Nickel Cadmium batteries, the flashing
decimal points low-battery indication will only provide a few minutes
of warning before the end of operation.
4.6 AC Power
To power the AM-48 with 115 VAC, plug one end of the AC Adapter
(70-0029) into the <DC 9V> connector on the bottom of the unit, and
the other end into an AC wall jack. See Figure 3-3 for the AC
Adapter, and Figure 3-2 for the AC Adapter plug on the AM-48.
The AC Adapter supplies 9 VDC to the AM-48. The locations of the
+ and – DC voltage contacts on the 2.5 mm jack of the AC Adapter
are illustrated on the transformer housing of the AC Adapter itself.
When using the AM-47 Hand-Held Printer, the AC Adapter can be
used to maintain the charge of the printer batteries that power the
AM-48. See Figure 6-3 for connections.
4.7 Power On/Off Switch
The Power On/Off Switch is a combination toggle switch and
momentary switch located at the top right-hand side of the AM-48
(Switch 1 in Figure 3-5).
Automatic Power Shutdown . To allow the AM-48 to power down by
itself, momentarily press the switch toward the <ON/OFF> position to
turn the power on. If the unit is left unattended, the power will shut
off automatically after the TIME OFF setting (see ¶7.12.4 for
instructions to set the time).
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