J-F2,000X-DK Navman Wireless, J-F2,000X-DK Datasheet - Page 26

• Manufacturer Part Number: J-F2,000X-DK
• Description: EVAL KIT GPS JUPITER 2
• Manufacturer: Navman Wireless
• Series: -r
• Type: Receiver, GPSr

Specifications of J-F2,000X-DK

• Frequency: 1575.42MHz
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: Jupiter 2
• Other names: 943-1013

C
APPENDIX
: Antenna and Internal LNA
Internal LNA and Antenna
The Internal LNA has two modes, each are specific to the amount of gain that a connected antenna will
have.
Usually, in high gain internal LNA mode, the antenna connected will be a passive antenna, while the low
gain internal LNA mode will require an active antenna or an external LNA.
It is recommended for the AGC to be in mid-range(between 1 and 62). If the total system gain is too
high, the AGC will be high, therefore it will not be able to compensate as well if the receiver is in a noisy
environment.
2
The Jupiter-F
evaluation is bundled with an Active Antenna, providing an amplifier gain of 16dB typical.
Active Antenna
The bundled M820B antenna requires a DC voltage between 2.7V to 6.0V. The Evaluation Kit can provide
3.3V to the active antenna by adding a jumper on J6. The active antenna should be low gain variety.
For passive antenna connection, ensure that jumper J6 is not installed in order to prevent damage.
Passive Antenna
Open the box and ensure that there are no jumpers installed on J6.
Appendix C
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