Symbol Technologies MicroBase MRC-921 - Manual (Page 17)

1. An external antenna can be ordered to
expand the coverage of the cradle’s
MicroRadio. Coverage increases from
50 ft (15.2 m) with a standard internal
antenna to 100 ft (30.5 m) with an
external antenna.
2. This bay holds a PTC-921 spare battery
pack for recharging. The bay fast charges
a fully discharged spare pack in 4 hours.
3. This bay holds a PTC-921 and recharges
the battery pack within it. The bay can
be ordered as a 4-hour fast charger or
as a 12- to 16-hour trickle charger.
4. These LEDs indicate the charging status of
the spare battery pack. Refer to the table
on
page 18 for an explanation of the LEDs.
5. These LEDs indicate the charging status of
the battery pack in the PTC-921. Refer to
the table on
page 18 for an explanation of
the LEDs.
6. This LED glows when the MRC-921 is
communicating via its MicroRadio.
7. This LED glows when the MRC-921 is
communicating via its DB-9 serial port or
optional RJ-41 serial port.
8. An external antenna screws onto this
connector to increase the MicroRadio’s
range.
3. PTC bay
2. Spare battery bay
5. PTC LEDs
4. Spare battery pack LEDs
1. External antenna (optional)
6. RF LED
7. Serial LED
8. Antenna connector
Figure 2. The MRC-921 MicroBase (front view)
15