plc9394

I'm the tecnical of repairing the PCB board, the POLAR test equipments model: PFL780 is i'm use now, anyone have use this equipments now or before, can let me know more about this equipments. How about u feel of this equipments? I feel this equipments cannot give the true result for me, or anyone know of any equipments is better than POLAR.

Help! help! can anybody tell me where can get the free datasheets of IC UPC624C(NEC)? Or what kind of this IC? I try to find in the net but cannot get it.