Granite Digital SCSIVue Active Diagnostic Terminators!

Granite Digital makes the best SCSI terminators on the planet!

Have you ever wondered whether your SCSI bus was operating properly? Have you leaned forward, straining carefully to listen to your drives, wondering if they were failing? Have you been bedeviled by weird, random freezes that you think may have their root cause in something to do with your SCSI bus?

Of course you have.

Hot-swap 68-pin MicroD Pass-Thru (GD1515)
Internal Female to Female Diagnostic Terminator!

If you’re one of those poor souls who has spent hours fiddling, tweaking, cursing, and fruitlessly configuring and reconfiguring a SCSI bus that just won't work properly, these terminators will set you free. Struggling with scanners? Struggle no more. These terminators can make it possible for you to use your scanner and your CD-R on the same bus, just as the gods of SCSI intended. Do you have multiple devices on a long external bus? Drives inexplicably dropping off the chain? Liberate yourself from SCSI tyranny! These terminators are the real deal.

Anyone who uses a Mac daily in the course of their job, or to make a living, understands how much time, grief and hassle can be saved by quickly and accurately diagnosing SCSI woes. These incomparable SCSI terminators belong in the toolkit of every Mac user who uses multiple SCSI devices. They are absolutely mandatory for systems administrators, consultants, and office Gurus.

For LVD-Ultra2,Ultra3 Order GD1515, or GD7022. Note, GD2015 no longer available substitute GD1515	50-pin MicroD for Jaz (GD8233) Or PlexWriter External This Works Best!

Granite Digital Terminators

50 Pin Centronics(m) Terminator GD7359 $23.70 Digital-Active Ultra, SCSI-2, End-Cap

HotSwap 50 Centronics (m-f) Terminator GD5509 $28.45 Digital-Active, Hot-Swappable, Pass-Thru

Optional Power Supply GD6067 $9.95 For Use w/ GD5509

50 Pin MicroD(m) Terminator GD8233 $28.45 Digital-Active (Jaz, PlexWriter Ext)

68 Pin VHD(m) LVD Ultra3 Terminator GD7022 $75.05 68 Pin VHD(m) LVD Ultra3 Active Terminator, 68-pin MDm, fits .8mm VHD Connector

68 Pin MicroD(ff) LVD Diagnostic Terminator GD1515 $47.45 LVD Diagnostic Internal or External Terminator with incl. gender changer

68 Pin MicroD(f) LVD Internal Ultra3 Terminator GD3450 $37.95 LVD Internal Female for Spare Connectors

Note: LVD Terminators come in two varieties. The dual-mode GD2015 has been updated, and now has LED indicators which reflect Single-Ended mode, High-Voltage Differential, or Low-Voltage Differential. Not sure if you are really getting the LVD bandwidth you crave? Puzzled by HVD vs SE devices? This terminator will tell the tale.

 

50-pin Centronics for 8-bit Narrow SCSI-2 and 8-bit Narrow Ultra (GD7359) End-Cap		Remote LED Indicator (GD1636). View Bus Status at a Glance!

Hot-swappable 50-pin Centronics Terminator Pass-Thru (GD5509)
Available w/ Optional Power Supply (GD6067) for Better Term Power!

Usage Notes

Part number GD1515 is Granite's internal/external female to male hot-swappable 68-pin MicroD Diagnostic LVD terminator. It ships with an included gender changer so it will fit all internal or external 68 Pin MicroD resquirements. The female connectors readily attach to any spare internal 68-pin MicroD connector at the end of your bus, and enable you to add or pull additional drives with a switchable on-off termination switch. (Turn switch to 'OFF' to enable termination) While it has a second pass through connector it is unnecessary to connect anything to it. Ideal for testing drives, or troubleshooting array extensions. Includes full diagnostic LED's for TRM, SEL, ACJK and REQ, as well as mode-sensing HVD, LVD, and SE indicators. Compatible with the GD1636 LED Remote. This is a serious tool for LVD geeks!

Part number GD7359 50-pin Centronics is ideal for use on external 50-pin SCSI buses where proper termination is elusive, or on internal 50-pin IDC buses when attached to a pigtail. If you have scanners or other devices that drop off the chain, or multiple devices which will just not work properly on the same bus, you should consider this terminator. Keep in mind that even a premium terminator won’t compensate for SCSI ID conflicts, or crappy cables, but Granite terminators, used in combination with Granite cables as a system, offer the absolute best in digital-active forced-perfect termination, and represent your best shot at making finicky devices work right in combination.

Part number GD5509 50-pin Centronics Hot-Swap is one of the most exciting termination products we have ever seen, and you do not need to be a mega-geek to appreciate it. We use this device extensively, and have found it indispensable when connecting and disconnecting devices from a SCSI chain--without having to reboot the host machine. With the optional power supply, devices that don't supply termination power can be used much more readily. This device is vastly superior to other allegedly "hot-swappable" terminators available from some semi-reputable SCSI companies (no, we won't name names). It also looks a lot cooler. But if you are running into problems using Leaf camera backs, other digital cameras with a SCSI interface, not to mention PowerBooks used in SCSI Disk Mode, you will probably shower us with gifts of wine and cheese after trying this terminator. (We would like to emphasize that you typically do not need to purchase the optional power supply, GD6067, unless you require additional termination power on your bus--if this is mystifying, please feel free to post on your local neighborhood MacGurus upgrades forum for some insight). If you have a need to be able to attach SCSI devices to machines that are already running, and resent having to shut down and reboot every time you move SCSI hardware around, you must purchase this device. It's a genuine time-saver, and when used with Intech's free PeripheralView or Adaptec's free SCSIProbe (for mounting newly attached devices), it really works. This device belongs in every technician's bag of tricks, and should be standard equipment in most design studios we've visited. (Sure, we'll consider a volume discount, if you buy a bunch of them).

Part number GD8233 50-pin MicroD is a special little terminator that replaces the fidgity termination Iomega wires into their external Jaz mechanisms. If you've ever struggled to get your external Jaz working right, particularly with other devices, you know exactly what we're talking about. While you're at it, you may as well get part number GD1642, 25-pin Apple to 50-pin MicroD, and replace that questionable Iomega Jaz cable you got with your external Jaz drive. Granite hardware works much better. It's also warranted for life. Don't you wish Granite made your Jaz, too? Unfortunately, this is the best we can do for you right now, if you must use an external Jaz mechanism. This terminator is also appropriate for use with external Plextor PlexWriters, which use the 50-pin MicroD form factor for their external connectors. Although the PlexWriter has termination circuitry built into its backplane, we like this terminator better, as nothing sucks more than figuring out why your CD-R is burning coasters. The LED indicators will save you tons of time.

Part number GD1910 68-pin MicroD is designed for use on all SCSI-2 and SCSI-3 single-ended (SE) Ultra wide buses utilizing a 68-pin interface. Building an Ultra wide RAID? Here's your part. This is the best terminator in the world when working with multiple Ultra wide devices, particularly when your SCSI chain is pushing the 4.5-foot single-ended Ultra wide cable distance limit. Combined with Granite's Teflon internal and external cables, you can rest assured that your legacy investment in aging (but still fast) Ultra wide drives is being exploited to the maximum. This terminator works wonderfully on the backplane of our Burly Enclosures, or inside your Mac, on an internal Teflon cable with pigtail and an LED Remote Indicator.

Part number GD5300 68-pin MicroD/Differential is perfect for properly terminating a long Differential SCSI bus. Not compatible with single-ended Ultra wide buses or Ultra wide devices. We'll say that agin: Not compatible with single-ended Ultra wide buses or Ultra wide devices. Nor is Differential (aka "High-Voltage Differential") compatible with LVD hosts or drives. Do not err by using this HVD terminator on an LVD bus! It could be costly! Far superior to the terminators included with most off-the-shelf Differential RAID, if you are still using HVD devices this terminator will earn a place in your heart. Fewer errors means fewer retries--and that means faster, more reliable thruput, with better data integrity--and yes, you can use really, really long cables. If you hate the whine of faster drives, and want your RAID in the next room, Differential SCSI, and this terminator, might be something for you to consider, particularly now that HVD components are officially obsolete and available at steep discounts. Just remember that all Granite Teflon cables, internal and external, are Differential Certified, and will work wonderfully regardless of whether you are using Ultra SCSI or Differential SCSI. No other cables can make that claim.

Part number GD1515 68-pin MicroD (LVD) is the terminator you require if you plan to buy new LVD Cheetahs and build the beastliest of all feasible RAID. Since the new Cheetahs lack termination circuitry on their drive controller boards, you must invest in an LVD terminator, if you plan to use your new LVD drive in LVD mode. While some LVD SCSI boards ship with inline terminators for use with internal cables, the GD1515 is the appropriate terminator if you are building an LVD RAID in an external enclosure, or if you bought a cheesy off-the-shelf unit, and its termination just is not doing the job. If you bought an LVD board that does not ship with an inline terminator and a cable, you may as well resign yourself to paying the price for cables and terminators worthy of that beastly drive. Remember: the good stuff always costs more, and you typically get what you pay for. It's the way of the world. (Don't worry, we think they're expensive, too. And while we may not have Maserati's parked out in front of Gurus HQ, you can bet that we have Granite terminators on our LVD arrays.)

Part number GD7022 is a phenomenal terminator. Like the GD1515, it has LED indicators which will confirm whether your bus is running in HVD, LVD, or SE mode (meaning high-voltage differential, low-voltage differential, or single-ended mode). It also has fully functional diagnostic LEDs with TRM (Term Power), SEL (Select), ACK (Acknowledge) and REQ (Request). No other LVD terminator in the world has this functionality! If you are building LVD arrays, this terminator will save you hours of time. If you aren't certain whether you are actually getting true LVD bandwidth from your expensive LVD SCSI board, this terminator will confirm it or prove the lie. If you simply need to terminate an LVD bus properly, the GD2015 above will work fine. It shares the same circuitry, sans the diagnostic features, of the GD7022. Considering the $20 price differential between these two terminators, you may want to get one GD7022 for use while building LVD arrays and to facilitate troubleshooting, and multiple GD2015's to remain in-place on working arrays. The GD1636, Remote LED Indicator, only works with the GD7022, so you can view your TRM, SEL, ACK and REQ indicators from anywhere on your workbench. Give your aching neck and back a break! Sit on your hiney, drink beer, crank Jethro Tull at loud decibels, and build LVD arrays in style!

Part number GD3450 is a unique and affordable internal LVD terminator. Designed with a female interface for easy attachment to spare internal 68-pin MicroD connectors on internal LVD TPO cables, this terminator can be moved from connector to connector on your internal cable, enabling easy expansion of your internal bus. Did you forget to order a genuine LVD TPO cable with internal terminator? This little device will attach to a spare connector on the far end of your internal LVD cable, and terminate your bus using Granite's peerless line-conditioning circuitry. Includes Term Power (TP) and mode-sensing (HVD, LVD, SE) LED's. Not compatible with the GD1636 LED Remote Indicator.

Part number GD1636 LED Remote Indicator is no longer available..



Even More Propaganda That Happens to Be True

• Digital-Active Termination improves overall SCSI performance by conditioning the SCSI bus--a constant 2.85 volts and 24ma signal line current results in more reliable data transfers and superior noise immunity: there is no longer any need to rely on those ridiculous grey block terminators you got for free with one of your old external hard drives, or those cheap "pass-through" terminators you bought at your local superstore, that invariably fail when you are on deadline, and need them the most.
  
  
• Diagnostic LED SCSI Bus Status Indicators enable you to tell, at a glance, if your SCSI bus is hung, or otherwise malfunctioning:
  
  
  • Termination Power LED (TRM) indicates whether there is sufficient termination power on the bus. If this light is not lit, your SCSI bus is not functioning. A blinking TRM LED is also indicative of a termination power problem on the bus.
    
    
  • Select Line LED (SEL) indicates when a SCSI device has been selected and is exchanging data with the host. This LED is lit when there is activity on the SCSI bus. Typically lit in conjunction with the ACK and REQ LEDs, the SEL LED blinks as the status of the SCSI bus changes.
    
    
  • Acknowledgement LED (ACK) indicates that the host device is responding to a request by a target SCSI device. Like the REQ LED, this indicator is dimly lit during data transfers, due to the high-speed of the transaction.
    
    
  • Request LED (REQ) indicates a target SCSI device requesting a response from the SCSI host. Like the ACK LED, this indicator is dimly lit during data transfers.
  
  
  
• Gold Contacts offer superior conductivity and durability. These terminators reek of quality. Warranted for life, you cannot buy better terminators anywhere. And that's the bottom line.
  
  
• LED Remote indicators enable you to monitor Granite Digital terminators installed insideyour Mac via a pigtail connector, where they can condition the internal Centronics SCSI-2 bus, or an internal Ultra wide bus, or an internal LVD bus, when used with an appropriate SCSI card and custom Granite internal Teflon or TPO cables. You can also use the LED Remote to monitor bus status when using Granite Digital terminators externally on high-quality enclosures.
  
  
• Convenience Why fiddle with confusing jumpers and resistor terminators? Disable termination on your drives and use these terminators to condition and regulate termination and term power! Whether installed inside your Mac, or used with external enclosures, there is no simpler, faster, or better way to conquer SCSI termination gremlins.
  
  
• Lifetime Warranty Again, from where we stand, this says it all.

Conquer those long SCSI chains required by scanners, removeable devices, external drives and RAID! While the original SCSI specification dictated a max of 6 meters, including internal cabling, this has little relevance in the real world: in our experience, the longer your SCSI bus, the more vulnerable you are to random SCSI freezes and other problems. These terminators will not enable you to violate the rules of SCSI with impunity, but they will allow you to get more useable distance than any other termination devices sold.

With high performance SCSI devices, including Ultra wide drives and RAID, the situation is much worse: the SCSI-3 single-ended spec dictates a max cable length of 1.5 meters, which in practice really means 1 meter. Do you have less than 3 feet of total cabling? Most Mac users have no idea how long their internal SCSI cables are in the first place. These terminators are mandatory, in our experience, any time single-ended Ultra wide SCSI devices are used.

With LVD buses, the specification mercifully accommodates cable distances up to 12-meters. Yes, we said meters. Using a Granite LVD terminator will enable you to ensure that your bus really is running in LVD mode, however, and will assist you in troubleshooting SCSI problems that inevitably arise when building subsystems using multiple devices and long, long cables. Granite LVD terminators are the bomb!

When combined with Granite’s beastly cables, you can be assured that your signals will be clear, strong, and nicely regulated, well up to the cable limits of the specification, whether SCSI-1, SCSI-2, SCSI-3 Ultra, Ultra wide, Ultra2 (LVD), Ultra160 (LVD), Ultra3 (LVD) or Ultra320 (LVD) devices!

The Gurus Certify
These Terminators Rule