Holux GR-89 User Manual - 3. Technical Specifications

GPS                                                                                         

Product series                                                                         

With HOLUX, You never lose the way! 

HOLUX Technology, Inc. 

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park) 

TEL: 886-3-6687000    FAX:886-3-6687111 E-mail:info@holux.com.tw Website:www.holux.com.tw 

5

3. Technical Specifications 

3.1. Electrical Characteristics 

3.1.1 General 

1). Frequency：L1, 1575.42 MHz 

2). C/A code：1.023 MHz chip rate 

3). Channels：20 

3.1.2 Accuracy

※

 (Open Sky) 

1). Position：10 meters, 2D RMS 

2).  7 meters 2D RMS, WAAS corrected 

3).  1-5 meters, DGPS corrected 

4). Altitude ：

5). Velocity：0.1 meters/second 

6).  Time 1 microsecond synchronized to GPS time 

3.1.3 Datum 

1). Default：WGS-84 

2).  Other Support different datum by request 

3.1.4 Acquisition Rate (Open sky, stationary requirements) 

1). Hot start：1 sec., average 

2). Warm start：38 sec., average 

3). Cold start：42 sec., average 

3.1.5 Dynamic Conditions 

1).  Altitude : 18,000 meters (60,000 feet) max

※

2). Velocity：515 meters/second (1000 knots) max

※

3). Acceleration：4g, max 

4). Jerk：20 meters/second, max 

3.1.6 Power

1). Input power：3.3~5.5 VDC 

2).  Input current: Less than 65 mA (without antenna)   

3.1.7 RF interface 

1).  RF signal input to RFIN pin from external antenna. DC supply from