Garmin GPSMAP 421s 010-00764-01 Manuale Utente

Appendix 

acquisition Times: (Average acquisition times for a stationary 

receiver with a clear view of the sky)

 

GPSMAP 421/421s  GPSMAP 451/451s 

GPSMAP 521/521s  GPSMAP 551/551s

 

Warm*: Approximately 1 second 

Cold**: Approximately 38 seconds

 

GPSMAP 526/526s  GPSMAP 556/556s

 

Warm*: Approximately 15 seconds 

Cold**: Approximately 45 seconds

 

*warm: your unit is at or near the last location where you 

recently acquired satellites. 

**Cold: your unit has moved by more than about 500 mi. (800 

km) since it was turned off.

Update Rate: once per second
gPS accuracy:  

Position: <49 ft. (15 m), 95% typical 

Velocity: 0.164 ft./sec 0.05 m/sec steady state

waaS accuracy: 

Position: <10 ft. (3 m), 95% typical 

Velocity: 0.05 m/sec steady state 

dynamics: 6 g

Power Source: 10–32 Vdc 

Usage: 15 W max at 13.8 Vdc

fuse: AGC/3AG - 3.0 A

Power: 1 kW Transducer, 1,000 W (RMS), 

8,000 W (peak to peak)*; 

Dual Frequency, 500 W (RMS), 4,000 W (peak to peak)

frequency: 50/200 kHz (dual frequency and 1 kW)
depth: 2,500 ft. (762 m) (1 kW), 1,500 ft. (457 m)**
 

*1 kW transducers are supported by the GPSMAP 526s and 

556s units only.

 

**Depth capacity is dependent on water salinity, bottom type, 

and other water conditions.