Re: more info on: CW keying glitches with PSDR and RXTX 6.3
- Well Brent,
If it were only easier I would recommend you test with Alex's "UBW Emulator" setup instead of the I2C-USB.
-- Charles WC5MC
--- In email@example.com, "Brent G DeWitt" <bdewitt@...> wrote:
> I switched to Rocky, and the same glitches are there. So PSDR is not the
> From: firstname.lastname@example.org [mailto:email@example.com] On
> Behalf Of BD
> Sent: Thursday, April 29, 2010 9:15 PM
> To: firstname.lastname@example.org
> Subject: [softrock40] CW keying glitches with PSDR and RXTX 6.3
> Looking at my transmit signal with a spectrum analyzer, I'm realizing I have
> lots of "glitches" in my transmitted CW and I'm not sure what adjustments
> might help. Here is the setup:
> - Softrock RXTX 6.3 with USB-I2C interface
> - PowerSDR v220.127.116.11 SV1EIA
> - Kent dual paddle into Softrock I2C-USB.
> - Dual core 3.6 GHz Pentium running Windows XP Prof. with SP3
> - Internal IDT audio adapter with ASIO4ALLv2 to reduce latency, buffer set
> to 256 samples, 48 kHz, 24 bit.
> - PSDR set to SDR-Si570 with USBtoI2C checked.
> - PowerSDR buffer set to 2048 with 48k sample rate.
> - PSDR keyer set to Primary SDR, Iambic.
> Latency is pretty low, but I get partial pulses as if the keyer software
> isn't creating regular pulses.
> Other info:
> - CPU runs 10%-20%
> - Nasty glitches at first key down and last key up.
> - Output is good with about 28 dBm at the connector.
> - Running the keyer at between 13 and 18 wpm.
> Another question, maybe associated; should a band, mode and VFO select front
> panel selection groups blank out when key down?
> Lots of stuff to try here!
> Thanks in advance for any advise,
> Brent - AB1LF