SDS100/SDS200: GPS question, led not coming on, GPS not being detected

CHHTX

Member
Premium Subscriber
Joined
Jan 10, 2019
Messages
155
Location
Lakehills TX & Donna TX
I have an SDS100 and a GPS that is model BR-355 that I've had for a couple of years. I haven't tried using the GPS in many years and I'm wondering if I'm doing something incorrect.

Issue1: When I attach the GPS to my SDS100 (using the cable splitter {link here} that I know I've successfully used before, the little "GPS" indicator does not come up on the SDS screen. iirc, you must go "Menu>Set your location>Set up GPS>Set Serial Port>" then I think I remember the bps must be set to 9600.

Issue2: I believe the bigger issue the little red LED is not turning on the GPS puck itself. Shouldnt that LED be coming on if I have the baud set up and everything plugged in?
 

a417

Active Member
Joined
Mar 14, 2004
Messages
4,669
I have an SDS100 and a GPS that is model BR-355 that I've had for a couple of years. I haven't tried using the GPS in many years and I'm wondering if I'm doing something incorrect.

Issue1: When I attach the GPS to my SDS100 (using the cable splitter {link here} that I know I've successfully used before, the little "GPS" indicator does not come up on the SDS screen. iirc, you must go "Menu>Set your location>Set up GPS>Set Serial Port>" then I think I remember the bps must be set to 9600.

Issue2: I believe the bigger issue the little red LED is not turning on the GPS puck itself. Shouldnt that LED be coming on if I have the baud set up and everything plugged in?
Your issue #2 should actually be your Issue #1. Device won't work with out power. Fix that, then see if the other issue resolves itself.

(I just remembered that i'm not using a BR-355, the LED comes on my GPS reciever only when power is applied. Can't speak authoritatively for the device the OP has)
 
Last edited:

CHHTX

Member
Premium Subscriber
Joined
Jan 10, 2019
Messages
155
Location
Lakehills TX & Donna TX
Your issue #2 should actually be your Issue #1. Device won't work with out power. Fix that, then see if the other issue resolves itself.

(I just remembered that i'm not using a BR-355, the LED comes on my GPS reciever only when power is applied. Can't speak authoritatively for the device the OP has)
Thanks for the input. I think its not getting power for some reason. According to the manual here

1695674802167.png
 

wtp

Member
Joined
Apr 3, 2008
Messages
6,143
Location
Port Charlotte FL
from the easy to read manual
You can connect the scanner to a NMEA compatible GPS device
For the SDS100, use the micro USB jack (USB1) under the flap to connect to the scanner.
You should select a baud rate of (4800 bps) for the serial port in the Set Your Location menu.
 

CHHTX

Member
Premium Subscriber
Joined
Jan 10, 2019
Messages
155
Location
Lakehills TX & Donna TX
from the easy to read manual
You can connect the scanner to a NMEA compatible GPS device
For the SDS100, use the micro USB jack (USB1) under the flap to connect to the scanner.
You should select a baud rate of (4800 bps) for the serial port in the Set Your Location menu.
that's interesting that it says that even though I think it would depend on which GPS module you're using. The older GPS models use 4800 and IIRC the newer GPS modules use 9600
 

wtp

Member
Joined
Apr 3, 2008
Messages
6,143
Location
Port Charlotte FL
LED indicator for GPS fix or not fix
LED OFF: Receiver switch off
LED ON: No fixed, Signal searching
LED Flashing: Position Fixed
GPS transfer rate Software command setting (Default : 4800,n,8,1 for NMEA
 

CHHTX

Member
Premium Subscriber
Joined
Jan 10, 2019
Messages
155
Location
Lakehills TX & Donna TX
Something useful for people later. I learned today that even before you plug the GPS in to the scanner, you should get a red LED on the GPS. I was trying to use a BR-355. The guy in the video made his own cable but its also available for as little as $30 on amazon. Here's a helpful video I found.


I have determined that my GPS is not powering up. At this point, I'm not sure if its my cable or the GPS. I went ahead and ordered the Uniden BC-SGPS for $80 from amazon since it will run on either the SDS 100 or the 200.
 

a417

Active Member
Joined
Mar 14, 2004
Messages
4,669
Something useful for people later. I learned today that even before you plug the GPS in to the scanner, you should get a red LED on the GPS. I was trying to use a BR-355. The guy in the video made his own cable but its also available for as little as $30 on amazon. Here's a helpful video I found.


I have determined that my GPS is not powering up. At this point, I'm not sure if its my cable or the GPS. I went ahead and ordered the Uniden BC-SGPS for $80 from amazon since it will run on either the SDS 100 or the 200.
I'm glad you got to this point, my GPS puck is powered off its own USB power source, and only sends data to the SDS. If I don't see the power LED on the puck on - I know for a fact that it's either unplugged or otherwise compromised.
 
Top