J3,30DK,00,3.5 Navman Wireless, J3,30DK,00,3.5 Datasheet - Page 10

• Manufacturer Part Number: J3,30DK,00,3.5
• Description: DEV KIT FOR JUPITER 3 AND J3-30
• Manufacturer: Navman Wireless
• Type: Receiver, GPSr

Specifications of J3,30DK,00,3.5

• Frequency: 1575.42MHz
• For Use With/related Products: Jupiter 3, J3-30
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 943-1006

Jupiter 3-30
5.1.6 Antenna gain
The receiver will operate with a passive antenna with unity gain. However, GPS performance will be optimum when
an active antenna is used. The gain of this antenna at the input of the module should ideally be 16 dB.
For recommendations on antenna use and testing see the Jupiter 3-30 Integrator’s manual (LA000577).
5.1.7 Burnout protection
The receiver accepts without risk of damage a signal of +10 dBm from 0 to 2 GHz carrier frequency, except in band
1560 to 1590 MHz where the maximum level is –10 dBm.
5.1.8 Jamming performance
The typical jamming performance of the receiver based upon a 3 dB degradation in C/N0 performance is shown in
Table 5-2. This is with reference to the external antenna.
5.1.9 Flash upgradability
The firmware programmed in the Flash memory may be upgraded via the serial port. The user can control this
by driving the Serial BOOT (pad 3) high at startup, then downloading the code from a PC with suitable software
(e.g. SiRFFlash). In normal operation this pad should be left floating for minimal current drain. It is recommended
that in the user’s application, the BOOT pad is connected to a test pad for use in future software upgrades.
5.1.10 Reset input
This active low input (pad 22) allows the user to restart the software from an external signal. In normal operation this
pad should be left floating or activated by an open drain driver. Active pull-up is not recommended.
Navman Wireless OEM Solutions • 27171 Burbank -Suite 200; Foothill Ranch, CA 92610-2501
TEL: +[phone] • FAX: +[phone] • www.navmanwirelessoem.com
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Datasheet


Table 5-2: Typical jamming performance
frequencymHz
1575.42
1550
1555
1560
1565
1570
1574
1576
1580
1585
1590
1595
1600

Jammingsignal
powerdBm
-22
-25
-38
-45
-65
-85
-90
-85
-77
-70
-55
-37
-23
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