# GPS - Fix not obtained **URL:** \ **Category:** Legacy FX/FXT series\ **Created:** [February 5, 2010, 8:48am UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173 "2010-02-05T08:48:32Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Freek](https://avatars.discourse-cdn.com/v4/letter/f/9e8a1a/32.png) [@Freek](https://forum.sierrawireless.com/u/Freek)\ **Post date:** [February 5, 2010, 8:48am UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173/1 "2010-02-05T08:48:32Z")
Hi I’m using a fastrack supreme modem with a gps module. I upgraded the frimware to 73.a and downloaded the simple sample opus I gps sample to the gps. When I run at+wopen=1 the gps replies: “GPS Sample: GPS Fix not obtained yet” Help in this matter will be kindly appreciated ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [February 5, 2010, 9:10am UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173/2 "2010-02-05T09:10:32Z")
> [@Freek](#): > > “GPS Sample: GPS Fix not obtained yet” The key word there is “yet”: It takes a while to get a fix - especially the first fix. How long did you wait? Is your antenna in a good position to get a fix? Is the antenna bias power turned on? ---
**Author:** ![GScholten](https://avatars.discourse-cdn.com/v4/letter/g/91b2a8/32.png) [@GScholten](https://forum.sierrawireless.com/u/GScholten)\ **Post date:** [February 23, 2010, 6:41pm UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173/3 "2010-02-23T18:41:58Z")
I have the same problem. I waited about ten minutes in the outdoor site, but still same message. What is the typical time one needs to wait? ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [February 23, 2010, 7:31pm UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173/4 "2010-02-23T19:31:37Z")
> [@GScholten](#): > > I have the same problem. Since Freek never bothered to reply to confirm what his/her actual problem was, how can you know that you have the same problem?! > [@](#): > > I waited about ten minutes in the outdoor site Was it a good, clear site - ie, not under trees or in a “canyon” of tall buildings? > [@](#): > > What is the typical time one needs to wait? With a good, clear view of the sky, ten minutes should be plenty. Is the GPS antenna (not the same as the GSM antenna) properly connected? Is the GPS antenna power switched on? Have you spoken to your supplier? ---
**Author:** ![GScholten](https://avatars.discourse-cdn.com/v4/letter/g/91b2a8/32.png) [@GScholten](https://forum.sierrawireless.com/u/GScholten)\ **Post date:** [February 24, 2010, 11:20am UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173/5 "2010-02-24T11:20:44Z")
> [@awneil](#): > > Since Freek never bothered to reply to confirm what his/her actual problem was, how can you know that you have the same problem?! I mean, I get the same message 😉 > [@awneil](#): > > Was it a good, clear site - ie, not under trees or in a “canyon” of tall buildings? well, there were trees as well as tall buildings in the near - I’ll see if I find a better place for testing. > [@awneil](#): > > Is the GPS antenna (not the same as the GSM antenna) properly connected? > > Is the GPS antenna power switched on? I should mention, I do not have an AirLink device, my device is a Wireless CPU with OPUS-III GPS module. I placed my question in this sub-board just because there was already this thread here. I’m not sure whether the GPS antenna power needs to be switched on manually, doesn’t the GPS Simple Sample App check this? > [@awneil](#): > > Have you spoken to your supplier? my supplier directed me to this board. ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [February 24, 2010, 11:35am UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173/6 "2010-02-24T11:35:27Z")
> [@GScholten](#): > > my device is a Wireless CPU with OPUS-III GPS module. Are you sure that the Wireless CPU is correctly communicating with the GPS module? > [@](#): > > I’m not sure whether the GPS antenna power needs to be switched on manually Then that’s the first thing that you need to check! > [@](#): > > doesn’t the GPS Simple Sample App check this? IIRC, it doesn’t; but the source is provided - so you can check! You also need to check that all the other configurations, GPIO usage, etc are correct for your particular application… > [@](#): > > my supplier directed me to this board. That’s rather unhelpful of them! It is their job to support you! ---
**Author:** ![GScholten](https://avatars.discourse-cdn.com/v4/letter/g/91b2a8/32.png) [@GScholten](https://forum.sierrawireless.com/u/GScholten)\ **Post date:** [February 24, 2010, 2:00pm UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173/7 "2010-02-24T14:00:55Z")
> [@awneil](#): > > Are you sure that the Wireless CPU is correctly communicating with the GPS module? No, I’m not sure because I don’t know how to find that out. I would tend to assume that the fact that the application starts at all implies that communication is correct. I also tried QueryApp application that should display “+CME EROOR: 4” if “the feature is not enabled”, but it doesn’t display this error. Sending AT+CGPS command for set UART also does not return any error. Traces tell me for both applications, that adl\_fcmSendData() returns OK and erGetGpsState() returns ER\_GPS\_STATE\_OK. > [@awneil](#): > > Then that’s the first thing that you need to check! I don’t know how to do so. > [@awneil](#): > > IIRC, it doesn’t; but the source is provided - so you can check! I could, if I knew what the responsible line of code should look like. I guess, this should be some kind of AT command. > [@awneil](#): > > You also need to check that all the other configurations, GPIO usage, etc are correct for your particular application… currently, I’m just testing GPS Simple Sample and QueryApp. My own application can be concerned when at least one of them works fine. > [@awneil](#): > > That’s rather unhelpful of them! > > It is their job to support you! the do not seem to think so. ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [February 24, 2010, 2:54pm UTC](https://forum.sierrawireless.com/t/gps-fix-not-obtained/4173/8 "2010-02-24T14:54:03Z")
I think it would help if you described your background, what specific parts you are using, is this a custom hardware design, what you are trying to achieve, etc.