Posted 07 January 2017 - 01:10 AM
Try moving or pulling the USB cable just a little out of the USB socket on the JCat card and watch for the green LED light on the Isolator, hopefully the Jcat casing has retained the Green Leds near the sockets.
I spent several hours with my Femto card trying to get it to lock to the Isolator before discovering that my PPA USB cable needed some adjustment to get it to pick up the 5v connection.
The original JCat USB card works every time with the Isolator when I put it in the chain with the PPA USB cable but the newer card has slightly different USB sockets, they look better quality but the connection does not seem to work as well with the PPA USB cable connector.
Thought I had a dud card first but after persevering i finally got everything working.
Audio PC - Gigabyte H97M-D3H & PPA OCXO Mobo, Teradak ATX Linear for 20 pin ATX on Mobo, Paul Hynes SR7EHD 12v for Mobo, 5v for clocks & 5v supply to Audiowind Regulator for 1.3v to RAM direct, JCat Femto USB Card 5v from Paul Hynes, Startech Lex – Amber Regen to JCat USB & Startech Rex to Lex by 2x Meicord LAN through GISO GB Isolator powered by Teddy Pardo 18v Linear, Wtfplay off USB on REX – remote control by Mele F10, D to D - PPA Red USB Cable - Intona - LFP 3.3v battery powered USB Regen – Isolated Xmos 768kHz USB DDC powered by 2 x 3.3v 0.8uV Linear Regs – i2s - D to A - Lampizator Big7, Conrad Johnson Premier 17LS, Classe CA 2200, Raidho C1s. Recent changes in red.