Garmin GPS 16 HVS Receiver 010-00258-53 User Manual

190-00228-21

GPS 16/17 Technical Specifications 

Rev. A

Page 7

The GPS 16LVS and GPS 16HVS sensors utilize an 8-pin RJ-45 plug. The GPS 17HVS terminates in a JST
connector, which is mainly for factory testing; you can remove the JST connector without voiding your warranty.
The following is a functional description of each wire in the cable assembly. 

1

Red

POWER

GPS 16LVS: Regulated +3.3 to +6 VDC. Typical operating current is 80 mA. An
internal 6.8 V transient zener diode and a positive temperature coefficient
thermistor protect from transients and over-voltages. With voltages greater than
6.8 VDC the zener will draw several amps of current through the thermistor,
causing it to heat rapidly and eventually power the unit off, unless an external
fuse blows first. When proper supply voltages are returned, the thermistor will
cool and allow the GPS 16LVS to operate.
GPS 16HVS & GPS 17HVS: Vin can be an unregulated 8.0 VDC to 40 VDC,
optimized for 12 VDC. Typical operating power is 800 mW. This voltage drives a
switching regulator with a nominal 5.0 VDC output, which powers an internal
linear regulator, producing the system Vcc.

2

Black

GROUND

Power and Signal Ground

3

Yellow

REMOTE
POWER
ON/OFF

External Power Control Input. Active (ON) if less than 0.3 VDC. Inactive (OFF)
if open-circuit. Pulling this pin to ground enables the unit; leaving the pin open-
circuited powers the internal regulators off and drops the supply current to less
than 1 mA. This input is intended to be driven by an open-collector output.

4

Blue

PORT 1
DATA IN

First Serial Asynchronous Input. RS-232 compatible with maximum input
voltage range -25 < V < 25. This input may also be directly connected to standard
3 to 5 VDC CMOS logic. The low signal voltage requirement is <0.6 V, and the
high signal voltage requirement is >2.4 V. Input impedance is between 3.0 and
7.0 k

Ω. This input may be used to receive serial initialization/ configuration data

as specified in Section 

5

White

PORT 1
DATA
OUT

First Serial Asynchronous Output. This RS-232 compatible output normally
provides serial data which is formatted per NMEA 0183, Version 3.0. This output
is also capable of outputting phase data information; see Appendix C for details.
The NMEA 0183 baud rate is switchable in the range of 300 to 38400 baud. The
default baud rate is 4800.

6

Gray

PPS

One-Pulse-Per-Second Output. Typical voltage rise and fall times are 300 ns.
Impedance is 150 

Ω. Open circuit output voltage is low = 0 V and high = Vin in

the GPS 16LVS, and low = 0 V and high = 5.0 V in the GPS 16HVS and GPS
17HVS. The default format is a 100 ms wide active-high pulse at a 1 Hz rate; the
pulse width is configurable in 20 ms increments. Rising edge is synchronized to
the start of each GPS second. This output provides between 800 mVp-p to
1.7 Vp-p for GPS 16LVS and 1.4 Vp-p for the GPS 16HVS and 17HVS into a
50 

Ω load. The pulse time measured at the 50% voltage point will be about 50 ns

earlier with a 50 

Ω load than with no load.

7

Green

PORT 2
DATA IN

Second Serial Asynchronous Input, electrically identical to PORT 1 DATA IN.
This input may be used to receive serial differential GPS data formatted per
RTCM SC-104 Recommended Standards For Differential Navstar GPS Service,
Version 2.2 (see Section 

 for details).

8

Violet

PORT 2
DATA
OUT

Second Serial Asynchronous Output, electrically identical to PORT 1 DATA
OUT. Reserved for future use.