# Xbee S2C RPSMA Antenna Problem

**URL:** <https://forums.digi.com/t/xbee-s2c-rpsma-antenna-problem/18216>\
**Category:** XBee - Zigbee\
**Tags:** antenna, rpsma, xbee\
**Created:** [April 5, 2017, 10:40am UTC](https://forums.digi.com/t/xbee-s2c-rpsma-antenna-problem/18216 "2017-04-05T10:40:35Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![santosh\_funambolo](https://avatars.discourse-cdn.com/v4/letter/s/58f4c7/32.png) [@santosh\_funambolo](https://forums.digi.com/u/santosh_funambolo)\
**Post date:** [April 5, 2017, 10:40am UTC](https://forums.digi.com/t/xbee-s2c-rpsma-antenna-problem/18216/1 "2017-04-05T10:40:35Z")

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Recently I bought 3 Programmable Xbee from mouser but there is problem with these modules. Sometimes it connects to PC, sometimes not. Can anyone help me with this issue and i found that there is short between signal line and ground of the RPSMA connector.

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**Author:** ![DystopianFerret](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@DystopianFerret](https://forums.digi.com/u/DystopianFerret)\
**Post date:** [April 5, 2017, 12:55pm UTC](https://forums.digi.com/t/xbee-s2c-rpsma-antenna-problem/18216/2 "2017-04-05T12:55:16Z")

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What interface board are you using to connect the XBee to PC?

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**Author:** ![santosh\_funambolo](https://avatars.discourse-cdn.com/v4/letter/s/58f4c7/32.png) [@santosh\_funambolo](https://forums.digi.com/u/santosh_funambolo)\
**Post date:** [April 6, 2017, 11:38am UTC](https://forums.digi.com/t/xbee-s2c-rpsma-antenna-problem/18216/3 "2017-04-06T11:38:18Z")

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Xbee Grove Dev. Bd

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**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [April 7, 2017, 11:53am UTC](https://forums.digi.com/t/xbee-s2c-rpsma-antenna-problem/18216/4 "2017-04-07T11:53:01Z")

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Is the device configured as an End device?

What is the full part number of the module in question?

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**Author:** ![GerardoMC](https://avatars.discourse-cdn.com/v4/letter/g/9f8e36/32.png) [@GerardoMC](https://forums.digi.com/u/GerardoMC)\
**Post date:** [February 18, 2020, 11:03am UTC](https://forums.digi.com/t/xbee-s2c-rpsma-antenna-problem/18216/5 "2020-02-18T11:03:44Z")

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I’m having the same problem. I’m using a Xbee USB Adapter V2.1 from [www.DFRobot.com](http://www.DFRobot.com)

[https://www.dfrobot.com/product-588.html](https://www.dfrobot.com/product-588.html)

Thank you!

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**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [February 18, 2020, 11:08am UTC](https://forums.digi.com/t/xbee-s2c-rpsma-antenna-problem/18216/6 "2020-02-18T11:08:57Z")

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Gerardo and Funanbolo,

If this is the S2C module with the Zigbee firmware version installed, you enable the end device function by enable the sleep function (SM).

Eric  
Digi Support