[hpsdr] Angelia External Clock problem

Clyde Washburn k2ue at rochester.rr.com
Wed Jun 5 12:13:56 PDT 2013


Well, the 0-2V I was getting was just ohms law -- Vdd=4.85, Vsources 4.04, thru 51 ohms = 15.9ma, thru 150 ohms=2.38V.  With only 2V
out the risetime thru the 1.5V region is really slow, since it's approaching where it's going to settle at just 2V.  With 3V out the
risetime is still not what you would want for a clock, and it only improves by 2:1 from -10dBm to +10dBm -- not the 10:1 you would
expect, which means it is not limited by the slope of the input sine wave passing thru zero, but rather output drive impedance and
trace capacitance.

Rebooting everything and  a database reset has no effect on the receive problem.  Still have audio only on one channel, with BIN the
2nd channel is about 6dB down, and still about 10dB upslope 300Hz to 3KHz.

__________________
Clyde Washburn, K2UE
k2ue at rochester.rr.com
82 Lasalle Pkwy
Victor, NY 14564-9610
585-317-7006



-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Abhi A
Sent: Wednesday, June 05, 2013 2:48 PM
To: hpsdr at lists.openhpsdr.org
Subject: [hpsdr] Angelia External Clock problem

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