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- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!col.hp.com!fc.hp.com!koren
- From: koren@fc.hp.com (Steve Koren)
- Subject: Parallel signal levels
- Sender: news@fc.hp.com (news daemon)
- Message-ID: <C021t2.H7n@fc.hp.com>
- Date: Wed, 30 Dec 1992 04:29:26 GMT
- Organization: Hewlett-Packard Fort Collins Site
- X-Newsreader: Tin 1.1.3 PL5
- Lines: 33
-
-
- Hello,
-
- I'm trying to connect an Amiga 2000 to an HP Laserjet IIIP through a
- parallel printer sharing device. This device has two parallel inputs,
- and switches the active one to an output port which goes to the printer.
- Here's what happens:
-
- 1) When the device is not used, everything works OK for long and short
- cables.
-
- 2) When the cable between the Amiga and the device is short (ie, < 5
- ft), everything is OK.
-
- 3) When same cable is long (> 5 ft), printing yields garbage.
- However, using the exact same cables and an MS-DOS machine,
- everything works fine.
-
- It seems that somehow the Amiga is putting out less signal level than
- the DOS machine is. I've heard that parallel cables have a max length
- of something like 9 feet, but I'm not able to come near that limit.
-
- Does an Amiga 2000 put out a lower voltage level on the parallel port
- than clones do? Is it within the parallel spec? Is there even such a
- thing as a specification for parallel ports? Assuming that we can't get
- the computer closer to the parallel switching device, is there anything
- that can be done?
-
- Thanks,
-
- - steve
-
-
-