STM-8 INSTRUCTIONS PACKAGED PARTS The STM-8 packaging includes the following: • Master unit • Cushioned carrying case • Warranty card • 9V alkaline battery • 1 Identifiable passive remote unit labeled A [for use with UTP (Unshielded Twisted Pair) cable]* •...
STM-8 INSTRUCTIONS VOLTAGE PROTECTION This tester and the remote units should never be used on lines where voltage is present. The master unit and active remote are designed to withstand and protect against typical telephone live line voltage levels, 48 VDC and 90 VAC.
STM-8 INSTRUCTIONS CONTROLS AND FEATURES The STM-8 is comprised of one master and one remote unit. The master provides all indications on the LCD screen (1). It has a single 8-wire jack output (2) and a button (3) to activate the unit.
LED (6) for visual pass/fail identification and powered by a replaceable lithium battery (7). PASSIVE REMOTE (5) Fits 6- and 8- postion plugs ACTIVE REMOTE (Sold separately or included with STM-8-S) (7) Battery (6) LED Compartment Indicators Section 3: Controls...
STM-8 INSTRUCTIONS FUNCTIONS The STM-8 is a microprocessor-based tester which evaluates 1-, 2-, 3- or 4-pair shielded and unshielded cabling for shorts, opens, miswires, reversals, split pairs and cable length. Eight of the twelve test modes are used for testing continu-...
• One hour in the TONE and TALK BAT modes RESUME TESTING: The master can be reactivated by pressing the button and the STM-8 will resume testing in the last test mode used. The following flow chart illustrates the display...
STM-8 INSTRUCTIONS TEST MODES T568A SCTP568A T568B SCTP568B USOC 10BASE-T TOK-RING TP-PMD LENGTH FIND OUTPUT TONE TONE MOD ON ANY PIN (1-8) 5 VOLT OUTPUT TALK BAT ON PINS 4 & 5 *OFF* Section 4: Functions...
STM-8 INSTRUCTIONS TEST CYCLE REMOTE ID PAIR BY PAIR CONTINUITY TEST SHIELD CONTINUITY CHECK PAIR BY PAIR TRANSMISSION TEST PASS/FAIL DISPLAY SEARCH CYCLE SHIELD SEARCH REMOTE ID SEARCH DISPLAY WIRE SCHEME or TEST TYPICAL PAIR COMBINATIONS LENGTH TEST DISPLAY LENGTH IN FEET...
If the pair-to-pin cabling scheme is correct, the STM-8 will display Ts in the appropri- ate positions for each pair of the selected cabling scheme. If the pair-to-pin cabling scheme is not followed, it will result in a display of Xs for each pair.
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ScTP568A mode or the ScTP568B mode. This test will also require the use of the active remote (STM8-RA-S). In the ScTP mode, the STM-8 will test for shield continuity in addition to the cable continuity test and transmission test. The STM-8 will perform the shield continuity test immediately following the pin to pin continuity test.
If a typical wiring scheme is not found, the STM-8 will run a test on typical pin combinations (i.e. pins 4 & 5, 3 & 6, 1 & 2, 7 &...
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The use of a tone receiver, such as a tone sniffer or butt set, at the far end will assist in locating the tone from the STM-8 master that is generating the tone. TALK BATTERY:...
STM-8 INSTRUCTIONS INDICATIONS The STM-8 tests by pairs and the LCD screen will display readings in groups of two. See the following table for indications. Indications are displayed in the LCD pin location that corresponds to the pair/pin under test. Numbers...
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FAIL INDICATIONS: When a PASS indication is not encountered, the LED on the master unit flashes rapidly for approx- imately one second. The STM-8 will not proceed to the shield or transmission test if a cable fails continuity. If using the active remote the red LED on the active remote will illuminate for one second.
[3] R (reversal), [4] ? (miswire), [5] X (split pairs). Note: If testing a cable under 1 meter (3 ft.) and it passes continuity, the STM-8 will display Xs in the appropriate locations on the LCD screen for the transmission test and display TOO SHRT.
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STM-8 INSTRUCTIONS EXAMPLES OF STM-8 DISPLAYS TEST MODE: T568A REMOTE IDENTIFIER: A CABLE LENGTH: OVER 1 METER (3 FT.) T568A Indications Master LCD Segments LCD Segment Screen 1 Screen 2 Screen 3 Screen 4 Screen 5 Screen 6 Screen 7...
STM-8 INSTRUCTIONS TROUBLESHOOTING POSSIBLE CAUSE CONDITION FIND mode indicates TOO Cable under test is too short. SHRT for correctly wired cable. Make sure cable is at least 1m (3 feet) in length to function in this mode. The center pins are not The remotes are not identified.
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STM-8 master unit which will not operate the LEDs. The test can still be performed and all other features will function properly.
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STM-8 INSTRUCTIONS Correct Pairing Correct connectivity of telecommunica- tions outlet/connec- tors is defined in TIA-568-A section 10.45 and is illustrated as shown. Crossed Pairs A crossed pair occurs when the two conductors in a wire pair are connnected to the position for a different pair at the remote connector.
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STM-8 INSTRUCTIONS Reversed Pairs A reversed pair occures when the polarity of one wire pair is reversed at one end of the link (also called tip/ring reversal). Split Pairs Split pairs occur when pin-to-pin conti- nuity is maintained, but physical pairs are separated.
STM-8 INSTRUCTIONS BATTERY INSTALLATION Master Unit Rotate the bottom of the Remove door from battery door away from tester housing by the tester housing. unsnapping from pivot point and pull the 9V connector out of the battery compartment. Note: Replace the battery when LOW BATT is displayed.
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STM-8 INSTRUCTIONS Connect new 9V Lay the battery ribbon alkaline battery to across compartment connector. which will allow for easy removal of battery. Section 10: Battery Installation...
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STM-8 INSTRUCTIONS Place into battery Reattach the battery compartment as shown door to pivot point on on the battery housing and rotate orientation diagram door to its closed engraved in the battery position. compartment. Section 10: Battery Installation...
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STM-8 INSTRUCTIONS Active Remote (Sold separately or included with STM-8-S) The battery for the Slide battery compart- active remote (factory- ment out of remote, installed) can be easily remove battery from replaced. Insert screw drawer and replace driver in slot on bottom...
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STM-8 INSTRUCTIONS Note: The battery for the active remote has a shelf life of approxi- mately 3 years and will operate the remote for approximately 340 hours in continuous use. Replace the battery when the LEDs fail to illuminate properly.
STM-8 INSTRUCTIONS TECHNICAL SUPPORT For Technical Support, call (860)945-4385 or fax (860)945-8550 or e-mail at the following address: techsupport@siemon.com Section 11: Technical Support...
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Global Headquarters Watertown, Connecticut USA Tel: (1) 866-548-5814 For a complete listing of our global offices visit our web site 100.3077 Rev. J 1/12...
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