[time-nuts] 5370B heatsink temperature
I just acquired my first HP 5370B off of ebay. After I had it running for 30 min to get it warm and start doing the checkout procedures in the manual i noticed that the heatsink was REALLY hot. I used my IR thermometer to check it and it read ~160F(71C). This seems excessively hot to me. What's normal? i didn't see it in the manual, but I might have missed it. -- --Eric _ Eric Garner ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] 5370B heatsink temperature
On Fri, Mar 9, 2012 at 10:08 AM, Eric Garner garn...@gmail.com wrote: .. i noticed that the heatsink was REALLY hot. I used my IR thermometer to check it and it read ~160F(71C). What heat sink? Did you have the cover off and were measuring the internal bar they use as a sink or was your FE5680A screwed down to a large aluminum heat sink. Were all the dozen or so screws in place? Was in making good contact -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] 5370B heatsink temperature
Check the archives on this one. There have been several discussions in the past about high heatsink temperatures. Some users have added external fans to them to get the temperature down. -John -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Eric Garner Sent: Friday, March 09, 2012 12:09 PM To: Discussion of precise time and frequency measurement Subject: [time-nuts] 5370B heatsink temperature I just acquired my first HP 5370B off of ebay. After I had it running for 30 min to get it warm and start doing the checkout procedures in the manual i noticed that the heatsink was REALLY hot. I used my IR thermometer to check it and it read ~160F(71C). This seems excessively hot to me. What's normal? i didn't see it in the manual, but I might have missed it. -- --Eric _ Eric Garner ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] 5370B heatsink temperature
This is on my HP 5370B time interval counter. it's the external heatsink by the power inlet. -eric On Fri, Mar 9, 2012 at 10:16 AM, Chris Albertson albertson.ch...@gmail.com wrote: On Fri, Mar 9, 2012 at 10:08 AM, Eric Garner garn...@gmail.com wrote: .. i noticed that the heatsink was REALLY hot. I used my IR thermometer to check it and it read ~160F(71C). What heat sink? Did you have the cover off and were measuring the internal bar they use as a sink or was your FE5680A screwed down to a large aluminum heat sink. Were all the dozen or so screws in place? Was in making good contact -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- --Eric _ Eric Garner ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] 5370B heatsink temperature
I believe so. I don't own a 5370B, but I remember the thread. What I was thinking of starts here: http://www.febo.com/pipermail/time-nuts/2010-September/050384.html Or the complete thread is available here: http://answerpot.com/showthread.php?1285452-Questions+about+HP+5370B -John -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Eric Garner Sent: Friday, March 09, 2012 12:22 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] 5370B heatsink temperature This is on my HP 5370B time interval counter. it's the external heatsink by the power inlet. -eric On Fri, Mar 9, 2012 at 10:16 AM, Chris Albertson albertson.ch...@gmail.com wrote: On Fri, Mar 9, 2012 at 10:08 AM, Eric Garner garn...@gmail.com wrote: .. i noticed that the heatsink was REALLY hot. I used my IR thermometer to check it and it read ~160F(71C). What heat sink? Did you have the cover off and were measuring the internal bar they use as a sink or was your FE5680A screwed down to a large aluminum heat sink. Were all the dozen or so screws in place? Was in making good contact -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- --Eric _ Eric Garner ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] 5370B heatsink temperature
Both of mine get quite hot but I've never measured the temperature. I have placed mine in a cold drafty area of a cold room in my basement. I figure the heat output can help heat the room. I pull data from them via gpib (over ethernet) and distribute some of the signals being measured via cables from other rooms so I have some freedom as to their location. -- On Fri, 9 Mar, 2012 1:29 PM EST John Lofgren wrote: I believe so. I don't own a 5370B, but I remember the thread. What I was thinking of starts here: http://www.febo.com/pipermail/time-nuts/2010-September/050384.html Or the complete thread is available here: http://answerpot.com/showthread.php?1285452-Questions+about+HP+5370B -John -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Eric Garner Sent: Friday, March 09, 2012 12:22 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] 5370B heatsink temperature This is on my HP 5370B time interval counter. it's the external heatsink by the power inlet. -eric On Fri, Mar 9, 2012 at 10:16 AM, Chris Albertson albertson.ch...@gmail.com wrote: On Fri, Mar 9, 2012 at 10:08 AM, Eric Garner garn...@gmail.com wrote: .. i noticed that the heatsink was REALLY hot. I used my IR thermometer to check it and it read ~160F(71C). What heat sink? Did you have the cover off and were measuring the internal bar they use as a sink or was your FE5680A screwed down to a large aluminum heat sink. Were all the dozen or so screws in place? Was in making good contact -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- --Eric _ Eric Garner ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] 5370B heatsink temperature
I have two 5370A and both run about the same temperature. It is high, but the heatink only supports a few power bipolar transistors used in the power supply that are designed to run hot. Other than the inconvenience of having blisters if you touch the heatsink, I would not worry about it. Its better to have the heat dissipated outside the unit than inside. Didier KO4BB Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: Eric Garner garn...@gmail.com Sender: time-nuts-boun...@febo.com Date: Fri, 9 Mar 2012 10:08:56 To: Discussion of precise time and frequency measurementtime-nuts@febo.com Reply-To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: [time-nuts] 5370B heatsink temperature I just acquired my first HP 5370B off of ebay. After I had it running for 30 min to get it warm and start doing the checkout procedures in the manual i noticed that the heatsink was REALLY hot. I used my IR thermometer to check it and it read ~160F(71C). This seems excessively hot to me. What's normal? i didn't see it in the manual, but I might have missed it. -- --Eric _ Eric Garner ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
