Trimble Inc. CCKCDPD ユーザーズマニュアル
A Specifications
6 6 CrossCheck CDPD Mobile Unit Manual
Warning – To meet FCC RF exposure requirements, the maximum gain
for externally mounted antennas (plus any cable losses) cannot be more
than 3 dBi.
for externally mounted antennas (plus any cable losses) cannot be more
than 3 dBi.
Warning – To meet FCC RF exposure requirements, all persons must be
at least 20 cm from the CDPD antenna when the transmitter is operating.
at least 20 cm from the CDPD antenna when the transmitter is operating.
Table A.6
Cellular Antenna Requirements
Item
Specification
Antenna Impedance
50
Ω
Maximum Antenna Gain
Externally mounted antenna gain plus cable loss should total
no more than 3 dBi gain to comply with FCC limits.
no more than 3 dBi gain to comply with FCC limits.
VSWR
1.5:1 nominal, 2.0:1 maximum
Table A.7
CrossCheck CDPD Mobile Unit Physical Specifications
Item
Specification
Assembly
Bottom: Aluminum
Top: Injection-molder plastic with integrated shield
Size
228 mm W x 121 mm D x 28 mm H
(9.6” W x 4.75” D x 1.9” H)
Weight
450 g (1 lb.)
Connectors
MDT: DB9 (receptacle)
Power/Ignition + Digital I/O: Molex Micro-Fit 3.0 16-pin 2-row
locking (receptacle)
locking (receptacle)
GPS antenna: SMA (receptacle) 50
Ω
CDPD antenna: TNC (receptacle) 50
Ω