39259Re: [softrock40] ESI UGM96 soundcard mini-review
- Jan 2, 2010On 02/01/10 16:53, Rob wrote:
>Reviews elsewhere suggests that it would only do 24-bits @ 48K, or
> Hi Group,
> Now I have two working SR systems, and an understanding of PowerSDR-IQ,
> thought I would try different sound cards. Here's a look at the UGM96,
> using an Edirol FA66 as a yardstick.
> The advantage of the UGM96 hits you when you realise how small and cheap
> it is, see http://www.esi-audio.com/products/ugm96/
> The test system was:
> Samsung Q320 laptop with Windows XP SP3
> PowerSDR-IQ V1.12.20
> Softrock RxTx V6.3 with MoBo V4.3 beta
> Alinco DM330 power supply (switch mode)
> Unlike the multi channel Edirol, the UGM96 has only a stereo in and out.
> So I had to use my PC for the sound output/input and have the VAC tab
> active in PSDRIQ.
> It took some fiddling with settings to get the UGM96 working smoothly. I
> am using the V2.3 windows driver from ESI, which is newer than the one
> on the install CD. The buffer size in the ESI system-tray panel needs to
> be increased to 256. In PSDRIQ the latency was set to 1024, with the
> ASIO driver.
> PSDRIQ gives a stern warning about not using an approved card, but apart
> from having to fiddle with VAC, it's not a show stopper.
> The patchbay software supplied by ESI is confusing. There is still no
> documentation on how to use it. Leaving it "unpatched" seemed to work.
> I noted no big difference on Rx or Tx performance between the two cards.
> Both cards give spurious spikes in the panadaptor. The zero spike of the
> UGM96 was bigger, but the wideband spikes smaller. I usually strap the
> FA66 to the Softrock chassis to reduce the zero spike anyway. The Alinco
> power supply causes some spurious "humps" but not too bad.
> The input op-amps on the UGM96 are JRC4580, which are not really high
> performance chips. They could be replaced by alternatives.
> The CPU load with the UGM96 was higher, but shouldn't be a problem on a
> reasonably specced PC. The main operational issue is the buffer size.
> When tuning, there's a slight delay between hitting a frequency and the
> audio coming through.
> There's a picture of my SR Mk.2 with the UGM96 attached in the photos
> Conclusion: UGM96 plays well with PSDRIQ, within the limitations of a
> two channel, unsupported card. For base station use, the FA66 has the
> edge. For portable use... I will fit the UGM96 inside my SR, making an
> integrated USB-in, antenna-out box.
16-bits @ 96K.
Which of those 2 are you using?
73 ... Sid.
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
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