Whirlwind DMX35T DMX Cable Tester 3 year Warranty Made in USA This cable tester checks 3 and 5 pin XLR DMX lighting cables and also indicates the presence of the DMX DATA signal when connected to a functioning control line. 3 pin XLR jacks also test microphone cables for opens, shorts or reversed connections. WHIRLWIND DMX35 CABLE INTEGRITY TEST Plug a 3 or 5 pin XLR type cable into the corresponding SEND and RECEIVE jacks on the DMX 35 tester. Rotating the test knob through the 5 positions (3 for 3 pin XLR cables) ?sends? voltage to the corresponding LED and pin of the cable connected to the SEND jack, through the cable and back to the pin and LED receiving the voltage at the RECEIVE jack. Rotating through all the positions will indicate how a cable is wired by lighting the corresponding SEND and RECEIVE LEDs. Cables with shorted conductors will light additional SEND and RECEIVE LEDs identifying which wires are shorted. Cables with open conductors will only light the SEND LED. The ?SHELL TO PIN 1? LEDs will light if the shell of the XLR is connected to pin 1 of the XLR at either end. DMX DATA TEST (Refer to the red DATA PIN 2 and green PIN 3 DATA+ LEDs) Plug the DMX control line into the RECEIVE jack on the DMX 35. Both LEDs should light with signal present and with a good cable. If either LED does not light, that line may be stuck low (no signal is present). While fading dimmers from zero to full, both LEDs should flicker during the fade. If either LED stays steady that line may be stuck high. With all dimmers at full, the green LED should be brighter than the red LED. If the red LED is brighter, DATA- (pin 2) and DATA+ (pin 3) lines may be reversed NOTE: These tests assume that the DMX signal being generated is relatively high-speed. These tests may not work accurately with slow DMX signals. BATTERY REPLACEMENT Open the unit by removing the case screws - 2 on each side of the unit. Replace the battery (9V alkaline type) when the SEND LEDs become dim. ----------------------------------------------------------------------------------------- Echo tone Music is a long time E-commerce Audio and Musical instrument dealer since 1998. We take pride in selling quality gear for musicians, sound engineers and broadcast applications. Shipping --Items are well packed and shipped USPS, UPS or Pallet Freight Service. Items purchased on Friday may not ship until Monday or until the projected processing period. We are working hard to get your unit Built ( if needed), processed and shipped. Returns/Refunds- If there is truly a manufacturing defect a return tag will be provided, otherwise customer pays for return shipping costs. Returned items must be sealed/unopened in original, brand-new condition, showing no signs of wear or use such as belt-buckle or pick scratches, scuffs, dings or scrapes, screw mount marks or collateral materials. Items must also include all original packaging, manuals, warrantees and accessories or your return may be subject to a return handling charge. If the item was listed as free shipping then the cost of the shipment will be deducted from the units original cost. Gear returned with out all its original packaging, warranty cards and accessories or that shows signs of wear from use, will be subject to an additional service fee. This item is now used and it would be unfair to resell to another customer as new. The following products cannot be returned - Clearance items, Apple products, items identified as non-returnable, discontinued items, used or NOS items, electronic software downloads, demo gear, strings, reeds, computers, tubes, earbuds, earplugs, recorders, harmonicas, raw-frame speakers, drumheads, drumsticks, turntable cartridges, fog fluids, clothing/footwear, body jewelry, sheet music, cleaners, polishes and polishing cloths, software/soundware, books, CDs, DVD's, vinyl records, and videos. Happy customers, that's music to our ears!