GPS 15 Technical Specifications (P/N 190-00266-00)
Rev. B
Page 7
2
GPS 15 WIRE DESCRIPTIONS AND WIRING DIAGRAMS
The GPS 15-F uses a six-contact flex circuit LIF (low insertion force) connector. The GPS 15-W uses a six-
pin JST connector (mating wire harness included). (See Section 1.5.1.3 for details.)
2.1
GPS 15 WIRE DESCRIPTIONS
GPS
15
Pin #
Signal Name
Description
1
BACKUP POWER
This input provides external power to maintain the battery-backed
SRAM and real-time clock. This enables the user to provide backup
power if needed for longer than the on-board rechargeable battery
will provide (roughly 21 days). Input voltage must be b2.8
and +3.4 Vdc.
2
GROUND
Power and Signal Ground
3
POWER
Reg3.3 Vdc input. Peak operating current is 75mA. Nominal
operating current is 66mA.
4
PORT 1 DATA OUT
Asynchronous Serial Output.
CMOS compatible output designed to interface directly with a host
microprocessor. Provides serial data which is formatted per
“NMEA
0183, Version 2.20”
. The baud rate is set during production to 4800,
but other rates are available.
5
PORT 1 DATA IN
First Asynchronous Serial Input.
CMOS compatible input designed to interface directly with a host
microprocessor. Input voltage range of 0 < V < 3.3.
6
RF BIAS
This input allows the user to externally apply an RF bias to the active
antenna. By default, the unit will use an internal voltage to power the
active antenna. If an external voltage greater than the internal voltage
of the center pin of the antenna (between 4.0 V and 8.0 V) is
detected at this input, the GPS 15 will automatically changes to the
external voltage. The antenna must not draw more than 60mA.
Table 2: GPS 15 Wire Descriptions
