Hand-Held SCSI CABLE TESTER Model ST1000
Simple to Use - Fast - Inexpensive All tests are run from one end of the cable Tests: Continuity Tests: Integrity (Twisted Pairs) Tests: Bus Type and Termination Power Tests cables with High Density 68 pin (HD 68) connectors. Tests cables with VHDCI or 50-pin connectors with the use of adapters. Made in USA (designed, manufactured, tested)

ST1000 is the world's only hand-held SCSI cable tester designed to fully test cable assemblies made to SCSI specifications!

At today's SCSI speeds continuity tests alone are no longer sufficient to qualify SCSI cable assemblies. Proper testing of SCSI cables includes a test for correct connection of twisted pairs and shielding. Continuity tests check only that wires are making connections on both ends of a cable.

Twisted pairs in the cable must be matched with the correct SCSI signal pairs – otherwise, it is possible to have a SCSI signal pair placed on wires that are not in the same physical twisted pair (see diagram below right). This will cause crosstalk with resultant SCSI errors.

The ST1000 verifies correct signal pairing.

FEATURES

The ST1000 SCSI Cable Tester is designed with an emphasis on simplicity of use. Connect a cable, press a switch and the LCD indicates the test results within 5 seconds. In addition to Continuity and Integrity, the ST1000 also tests to determine that the critical REQ and ACK signal pairs are located in the inner layers of the cable. 　 All tests are made with only one end of the cable connected to the tester. Therefore it is not necessary to remove installed cables. For details refer to SCSI Cables: More than a Couple of Connectors and a Few Pieces of Wire, and our article comparing the Paralan Models ST1000 and ST123. PDF version of this data sheet.

Prevent Costly Downtime

When a SCSI system has a cable problem the symptoms vary greatly. Examples of problems caused by poorly made SCSI cable:

1. The most extreme -- the system won't run.
2. The system partially boots before stopping.
3. The system will run if an extra terminator is inserted somewhere.
4. The system will run with some lengths of cable but not others even though the total cable length is within SCSI limits.
5. The system runs slower than expected.
   * NOTE: SCSI systems can mask intermittent transmissions with SCSI "retries" and Domain Validation, which may reduce system throughput.
6. The system runs for long periods but will then hang-up.
7. The system runs for long periods but will then have errors.
   * NOTE: Specific data pattern combinations can cause errors if cable pairs are not properly assigned within the cable. Random intermittent errors or SCSI "hangup" may occur; resulting in excessive system installation delays and costs.

Tests

Continuity Test: A. Tests pin to pin connection of cable. B. Checks for opens. C. Checks for wire to wire shorts. D. Checks for wire to shield shorts. E. Checks the shield. A shield failure is noted separately,     so ribbon cables may be tested. F. Checks for terminations. Integrity Test: A. Tests both wide and narrow cable for     correct signal pair/cable pair matching. B. Tests for correct pair location in cable. C. Checks for terminations. SCSI Bus Test: When connected to a powered SCSI bus: A. Display: Disconnect the other end from the SCSI bus. B. Display: Term Power Presence. C. Display: Bus Type - LVD, HVD, SE. D. Display: Diffsense Voltage. Specifications For ST1000 SCSI Cable Tester: Environmental Operating temperature: 0-50°C (32-122F) Storage temperature: -20°C to + 70°C (-4-158F) Relative humidity: 5-95% non-condensing International Compliance: CE MTBF 500,000 Hours SCSI Cables tested 68-pin High-Density With adapters: 68-pin VHDCI 50-pin High-Density 50-pin Centronic type 50-pin 2 x 25 pin IDC - Specifications subject to change without notice - 　 Connector 68-pin High-Density Female Power 9V Alkaline Battery Battery Life: 200 Tests Display includes Battery Life Indicator Weight 10.2 oz (288g) Shipping weight: Approx 2 lbs (0.9 kg) Dimensions 7.25" x 3.63" x 1.25" (184mm x 92mm x 32mm) Installed Sacrificial Connector adds 0.75" (19mm) to Height Loopback Module: 2.83" x .75" x 1.65" (72 x 19 x 42mm) Warranty Two Year Limited Warranty (excluding battery and connectors) 　 Ordering Guide for Model ST1000: Model Number Description ST1000 ST1000 SCSI Cable Tester. Includes: Carrying Case, Loopback Module AD1002, Sacrificial connector AD1001, User Manual, 9V Battery 6141. 　 Options Description Options and Adapters marked with an asterisk (*) are not suitable for any use other than as cable adapters for the ST1000. 6141 Battery: Standard 9VDC AD1001 Sacrificial Connector, 68-Pin high density -- one end male connector one end female connector. Plug male into mating connector and screw down locking nuts. Make all connections into and out of the other end of the adapter thus reducing wear on the ST1000 connector *. AD1002 Loopback Module, This adapter provides needed connections on one end of a cable to allow the ST1000 to perform testing when connected to the other end of the cable *.   The following are optional adapters: AD1003 68-Pin High Density male connector to 68-Pin VHDCI female connector. AD1004 68-pin HD male to 50-pin HD female adapter *. AD1005 68-pin HD male to 50-pin Centronic type female adapter *. AD1006 68-pin HD male to 2 x 25 pin IDC male adapter *. Not currently available. Note: In most cases when testing cables with other than 68-pin HD connectors, two adapters will be needed.

The SCSI Cable Tester is designed specifically to test cable assemblies made to SCSI specifications!

Detection ends ninety percent of most SCSI problem installations! Tests cable in seconds!

Continuity tests alone are not sufficient to qualify SCSI cable assemblies. Proper testing of SCSI cables must include a test for correct connection of twisted pairs and shielding. Continuity tests check only that wires are making connections on both ends of a cable.

Twisted pairs in the cable must be matched with the correct SCSI signal pairs - otherwise, it is possible to have a SCSI signal (signal and ground pair) placed on wires that are not in the same physical twisted pair (see diagram at right). This will cause crosstalk with resultant SCSI errors.

The SCSI Cable Tester will perform this test, called an Integrity Test.

Easy as 1-2-3:

1. Test continuity

2. Test integrity

3. Accept or reject cable

The continuity test and twisted pair integrity test can be performed on a SCSI cable in about 10 seconds.

For testing cables with the VHDCI connector you will need an adapter. This adapter plugs into the 68-pin HD connector on the ST123 to adapt it to the VHDCI. Depending on the testing you must do, you may need one, two or three of these adapters, Part Number 2158.

Prevent Costly Downtime

When a SCSI-configured system has a cable problem the symptoms vary greatly, from intermittent operation to SCSI "hang-up," resulting in excessive system installation delays and costs.

The SCSI Cable Tester is designed with emphasis on simplicity of use. New users will be able to operate the tester within five minutes.

With today's increased SCSI data rates, cabling becomes an even more critical issue.

Description of Tests

It's as easy as 1-2-31

PDF version of this data sheet.

Specifications For ST123 SCSI Cable Tester:

duplicated from www.paralan.com