# cnPulse **URL:** https://community.cambiumnetworks.com/c/products/cnpulse/19.md [Latest](https://community.cambiumnetworks.com/latest.md) · [Categories](https://community.cambiumnetworks.com/categories.md) · [Tags](https://community.cambiumnetworks.com/tags.md) --- ## [About the cnPulse category](https://community.cambiumnetworks.com/t/about-the-cnpulse-category/24271)
**Author:** [@system](https://community.cambiumnetworks.com/u/system)\ **Replies:** 0\ **Last updated:** [August 14, 2020, 12:49am UTC](https://community.cambiumnetworks.com/t/about-the-cnpulse-category/24271 "2020-08-14T00:49:47Z")
--- ## [cnPulse Introduction](https://community.cambiumnetworks.com/t/cnpulse-introduction/59252)
**Author:** [@Bruce\_Collins](https://community.cambiumnetworks.com/u/Bruce_Collins)\ **Replies:** 2\ **Last updated:** [March 14, 2025, 9:31pm UTC](https://community.cambiumnetworks.com/t/cnpulse-introduction/59252 "2025-03-14T21:31:19Z")
cnPulse is a GPS sync generator used with a wide variety of Cambium radios to provide a precise 1PPS (Pulse Per Second) timing reference. This timing reference is used by the radios to synchronize their transmit and rec… --- ## [How to tell is cnPulse is working](https://community.cambiumnetworks.com/t/how-to-tell-is-cnpulse-is-working/99954)
**Author:** [@Raymond\_Clark](https://community.cambiumnetworks.com/u/Raymond_Clark)\ **Replies:** 0\ **Last updated:** [June 17, 2024, 9:27pm UTC](https://community.cambiumnetworks.com/t/how-to-tell-is-cnpulse-is-working/99954 "2024-06-17T21:27:19Z")
We have a 450b and are running the cnPulse in mode 2. How can I tell if it is working? --- ## [CNpulse not seeing any satellites](https://community.cambiumnetworks.com/t/cnpulse-not-seeing-any-satellites/97875)
**Author:** [@Brian\_Schwickrath](https://community.cambiumnetworks.com/u/Brian_Schwickrath)\ **Replies:** 0\ **Last updated:** [February 19, 2024, 6:43pm UTC](https://community.cambiumnetworks.com/t/cnpulse-not-seeing-any-satellites/97875 "2024-02-19T18:43:21Z")
We have tried replacing GPS unit, CMM5, Cable, moving the GPS unit higher with no solution in sight. Unsure of next step. --- ## [When to start using cnPulse](https://community.cambiumnetworks.com/t/when-to-start-using-cnpulse/91763)
**Author:** [@Isaac\_Francisco](https://community.cambiumnetworks.com/u/Isaac_Francisco)\ **Replies:** 1\ **Last updated:** [March 16, 2023, 7:51pm UTC](https://community.cambiumnetworks.com/t/when-to-start-using-cnpulse/91763 "2023-03-16T19:51:29Z")
Forgive me if this is the wrong place to ask, but what would be the typical size of deployment to start introducing cnPulse devices? I know the answer to a lot of hypothetical questions is “it depends”, but is there a m… --- ## [cnPulse to CMM5 Cable Pinout](https://community.cambiumnetworks.com/t/cnpulse-to-cmm5-cable-pinout/59260)
**Author:** [@Bruce\_Collins](https://community.cambiumnetworks.com/u/Bruce_Collins)\ **Replies:** 2\ **Last updated:** [September 30, 2021, 3:02am UTC](https://community.cambiumnetworks.com/t/cnpulse-to-cmm5-cable-pinout/59260 "2021-09-30T03:02:30Z")
cnPulse is used to provide a 1PPS signal to CMM5 power injectors. The cable is an RJ-45 8-pin to RJ-12 6-pin. This is available from Cambium under model N000000L125A as a 20m shielded cable. Alternatively the pinout i… --- ## [cnPulse installation diagram](https://community.cambiumnetworks.com/t/cnpulse-installation-diagram/63723)
**Author:** [@JBoeldt](https://community.cambiumnetworks.com/u/JBoeldt)\ **Replies:** 1\ **Last updated:** [July 29, 2021, 6:48pm UTC](https://community.cambiumnetworks.com/t/cnpulse-installation-diagram/63723 "2021-07-29T18:48:29Z")
--- ## [Using cnPulse with 450b or 450 MicroPoP](https://community.cambiumnetworks.com/t/using-cnpulse-with-450b-or-450-micropop/75836)
**Author:** [@CambiumMatt](https://community.cambiumnetworks.com/u/CambiumMatt)\ **Replies:** 3\ **Last updated:** [July 8, 2021, 1:50pm UTC](https://community.cambiumnetworks.com/t/using-cnpulse-with-450b-or-450-micropop/75836 "2021-07-08T13:50:18Z")
If you want to use cnPulse to provide GPS Synchronization timing to a 450b or a 450 MicroPoP device, you can use the Timing Port to do so. Cambium Networks sells a part for this, N000000L127A. If you’d like to create yo… --- ## [cnPulse: CambiumSYNC Mode Deployment](https://community.cambiumnetworks.com/t/cnpulse-cambiumsync-mode-deployment/59256)
**Author:** [@Bruce\_Collins](https://community.cambiumnetworks.com/u/Bruce_Collins)\ **Replies:** 0\ **Last updated:** [December 5, 2018, 10:15pm UTC](https://community.cambiumnetworks.com/t/cnpulse-cambiumsync-mode-deployment/59256 "2018-12-05T22:15:48Z")
In CambiumSYNC mode deployment, cnPulse is connected in-line between the PoE source/injector and radio's PSU port. cnPulse receives power and data from the PoE source and then generates a signal with power, data and a 1P… --- ## [cnPulse: Pinout Tables](https://community.cambiumnetworks.com/t/cnpulse-pinout-tables/60802)
**Author:** [@JBoeldt](https://community.cambiumnetworks.com/u/JBoeldt)\ **Replies:** 0\ **Last updated:** [March 20, 2019, 10:09pm UTC](https://community.cambiumnetworks.com/t/cnpulse-pinout-tables/60802 "2019-03-20T22:09:28Z")
AUX Port ODU Port PIDU Port Port 1: AUX Output 4.5V ‐ 6.0V DC‐IN RJ45‐8, Shielded Pin1: N/C Pin2: N/C Pin3: N/C Pin4: V+ (4VDC‐6VDC) Pin5: GPS Location Data ‐9600bps (8Vo‐p) Pin 6: N/C Pin7: V‐… --- ## [cnPulse: Ports Definition](https://community.cambiumnetworks.com/t/cnpulse-ports-definition/59282)
**Author:** [@Bruce\_Collins](https://community.cambiumnetworks.com/u/Bruce_Collins)\ **Replies:** 0\ **Last updated:** [December 6, 2018, 3:55pm UTC](https://community.cambiumnetworks.com/t/cnpulse-ports-definition/59282 "2018-12-06T15:55:48Z")
Image attached shows the specific port layout and functionality for cnPulse. --- ## [cnPulse: Synchronizing two radios with one cnPulse](https://community.cambiumnetworks.com/t/cnpulse-synchronizing-two-radios-with-one-cnpulse/59281)
**Author:** [@Bruce\_Collins](https://community.cambiumnetworks.com/u/Bruce_Collins)\ **Replies:** 0\ **Last updated:** [December 6, 2018, 3:52pm UTC](https://community.cambiumnetworks.com/t/cnpulse-synchronizing-two-radios-with-one-cnpulse/59281 "2018-12-06T15:52:53Z")
When deploying multiple PMP 450i or PMP 450m AP's on a tower, it is possible to use one cnPulse module to synchronize both radios. This is done by connecting ODU 1 via the AUX port mode and ODU 2 via the in-line Cambium… --- ## [cnPulse: CMM5 Deployment](https://community.cambiumnetworks.com/t/cnpulse-cmm5-deployment/59258)
**Author:** [@Bruce\_Collins](https://community.cambiumnetworks.com/u/Bruce_Collins)\ **Replies:** 0\ **Last updated:** [December 5, 2018, 10:22pm UTC](https://community.cambiumnetworks.com/t/cnpulse-cmm5-deployment/59258 "2018-12-05T22:22:51Z")
cnPulse can be deployed as the 1PPS sync source for a CMM5. In this mode, the cnPulse is connected from it's AUX Output port to the CMM5 Injector SYNC IN Port. This cable is an RJ-45 8 pin to an RJ-21 6-pin. A pre-mad… --- ## [cnPulse: AUX Port Mode Deployment](https://community.cambiumnetworks.com/t/cnpulse-aux-port-mode-deployment/59254)
**Author:** [@Bruce\_Collins](https://community.cambiumnetworks.com/u/Bruce_Collins)\ **Replies:** 0\ **Last updated:** [December 5, 2018, 10:05pm UTC](https://community.cambiumnetworks.com/t/cnpulse-aux-port-mode-deployment/59254 "2018-12-05T22:05:55Z")
In AUX Port mode, cnPulse is connected to the AUX port of a PMP 450/450i/450m or PTP 450i radio's AUX port. The radio provides power to cnPulse and cnPulse provides a 1PPS signal and statistics related to number of sat…