Z3805A Info

MTI 261     5 mhz high stable oscillator
Milliren Technologies, Inc.
Model 260-0624-C

About the GPS module.

this inside the Z3805A will come with the
furuno GT-8031 come from japan.
NOT  only 8 channels (Z3801A 6 channels ,Z3816A 8 channels ) ,
This module is 16 channels

GPS Receiver Modules GT-8031

Integrity is further improved because of its SBAS (WAAS) capability in addition to traditional T-RAIM (Time-Receiver Autonomous Integrity Monitor) function. Several new command sets have been added for easier use.

PPS output mode is available. For example, in "always output mode", 1PPS is output without satellite signals using the receiver's internal timing (no UTC synchronization). In "fixed observation point mode", one satellite signal is enough to output UTC synchronized 1PPS. application is infinite.
Characteristics

    * Low cost but powerful, fast 16 Channel GPS receiver
    * Accuracy is not sacrificed 15 nanoseconds with regard to UTC (1 sigma).
    * Low power consumption (58mA@3.3VDC) at full tracking satellites
    * RF pig tail cable with popular connector already soldered for easier, more cost-effective installation.
    * Almanac uploading and downloading.
    * Autonomous transition from "Survey" to "Fixed Observation Point" lets the receiver calculate its position and then use the averaged position as the fixed observation point.
    * "Back to fixed position set" allows you to go back to the fixed position even after power-off.

Specifications
Numbers of channel	16 channels
Position-Fixing System	All-In-View SPS (DGPS RTCM-SC104)
Frequency	1575.42 MHz
Tracking capability	12 Satellites simultaneously including 1 WAAS supporting channel
Number of Parallel Searches	16
Protocol	NMEA-Like
WAAS Support	1 Channel
Uses DGPS and functions to deselect unhealthy satellites
GPS-Fix data Renewal Rate	1 Second
1PPS Output	UTC-Synchronized (1 pulse / second)
Acquisition / Tracking Specifications
Initial Acquisition Time	8.4 seconds Hot Start (Open Sky)
36 seconds Warm Start (Open Sky)
44.9 seconds Cold Start (Open Sky)
Re-acquisition Time	2 seconds
(-127 dBm or stronger signal interrupted for 10 seconds or less)
Horizontal Accuracy (2 drms)	5.6 m
Vertical Accuracy (2 drms)	7.3 m
Power Supply
Supply Voltage / Current	Voltage: 3.0 to 3.6 VDC
Current: Max 72 mA at 3.6 VDC
External Back-up power	Voltage: 2.1 to 3.6 VDC
Current: 200 uA when VCC = 3.6 VDC
Ambient Conditions	Operating temperature: -30 - +80 degree
Storage temperature: -40 - +85 degree
Dimensions	20.8 mm (W) x 33.8 mm (D) x 6.3 mm (H)
Mass	8 g