Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!husc6!cca!mirror!datacube!berger From: berger@datacube.UUCP Newsgroups: comp.arch Subject: Re: *-VME bus repeaters Message-ID: <101200007@datacube> Date: Wed, 2-Dec-87 14:11:00 EST Article-I.D.: datacube.101200007 Posted: Wed Dec 2 14:11:00 1987 Date-Received: Sun, 6-Dec-87 23:54:11 EST References: <1524@mmm.UUCP> Lines: 24 Nf-ID: #R:mmm.UUCP:-152400:datacube:101200007:000:1094 Nf-From: datacube.UUCP!berger Dec 2 14:11:00 1987 We have had some very good luck with the HVE-2000. This is a true A32/D32 bus extender. The Performance Tech 902A also works very well. They are both higher performance than the Bit 3 since they both support A32/D32 and the Bit 3 is only A24/D16. The HVE-2000 is literally twice as fast as the PT-902A in terms of data transfers. The main drawback is that you must use special cables supplied by HVE. These cables must be continuous between the two ends, you can not have intermediate bulkhead connectors. The PT-902A is half the speed of the HVE because it actually recreates the VME bus Master and must reclock all the signals adding a significant prop delay. This has one advantage in that you can electronically decouple crates. Also the PT-902A uses 4 50pin normal ribbon cables so cabling is a bit easier. Bob Berger Datacube Inc. Systems / Software Group 4 Dearborn Rd. Peabody, Ma 01960 VOICE: 617-535-6644; FAX: (617) 535-5643; TWX: (710) 347-0125 UUCP: berger@datacube.COM, rutgers!datacube!berger, ihnp4!datacube!berger {cbosgd,cuae2,mit-eddie}!mirror!datacube!berger