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www.whirlwindusa.com

 

 

MCT-7 

 

Multiple Cable Test System

 

                                              
          

INTRODUCTION: 

          
          
             The MCT-7 Cable Tester is a versatile unit that allows the user to test almost any 
pre-made and custom made leads or cables used in a typical audio/visual set up. 
          
             Leads fitted with any combination of the following connectors may be checked: 
          
          •  Male or female XLR 
          •  Speakon (4 pole) 
          •  Stereo or mono 1/4” (6.3 mm) jack 
          •  Stereo or mono 1/8” (3.5 mm) mini jack 
          •  Phono RCA 
          •  BNC 
          •  Midi (180 degrees DIN) 
          
             The MCT-7 Cable Tester allows you to test for the following conditions: 
          
          •  Positive Continuity 
          •  Cross Wiring 
          •  Loose Contact 
          •  Open Circuit 
          •   Leakage Between Wires (up to 10K

          •   Short Between Wires 
          •   Short to Ground (female XLR & MIDI) 
          
          
             Please read the following instructions carefully before using the MCT-7 Cable 
Tester. 
                  
             

Warning:   The leads to be tested must be fully disconnected from any other 

equipment or electrical source. Failure to do so could result in electrical shock and 
permanent damage to the MCT-7 Cable Tester unit, for which the manufacturer 
and suppliers can accept no liability. 

 
             The MCT-7 Cable Tester comes fitted with a 9 Volt type battery. Under normal 
usage this will allow several hundred hours of operation. We advise that before 

Summary of Contents for MCT-7

Page 1: ... for the following conditions Positive Continuity Cross Wiring Loose Contact Open Circuit Leakage Between Wires up to 10KΩ Short Between Wires Short to Ground female XLR MIDI Please read the following instructions carefully before using the MCT 7 Cable Tester Warning The leads to be tested must be fully disconnected from any other equipment or electrical source Failure to do so could result in ele...

Page 2: ...ins of connectors on the right side OUTPUT of the unit Checking the status of connections is made using the Pin Selector Switch Until you become familiar with the connectors pin wiring and switch selector positions you may wish to refer to the data shown in Table 1 Table 1 Connector Pin Assigned Position A Speakon NL4 1 2 1 1 2 4 2 3 B Phono RCA Center 2 Ring 1 B BNC Video Center 2 Ring 1 C MIDI 5...

Page 3: ...ermine which position of the Pin Selector Switch corresponds to the pins of the selected connector refer to Table 1 or the diagrams printed on the front panel of the MCT 7 Cable Tester 5 Rotate the Pin Selector Switch to position 2 3 and so on until all pins of the selected connectors have been tested Following are some examples of possible conditions that may arise while testing a lead all exampl...

Page 4: ...er LEDs will light is proportional to the leakage between wires The MCT 7 Cable Tester will show leakage up to 10KΩ between wires See Fig le SHORT BETWEEN WIRES the LEDs of the pin being tested will light also other LEDs will light for the wires in short See Fig 1f SHORT TO GROUND the LEDs of the pin being tested will light as well as the Ground LED Red and indicated with a G If more than one LED ...

Page 5: ...eo When testing mono plugs and the pin selector knob is in position 1 or 3 the LEDs 1 and 3 will light See Fig 1h Notice that in this case the Pin Selector Switch is in positions 1 and 3 respectively Testing and Replacing the Battery If you place the Pin Selector Switch to position number five the LED marked B will light this means the battery is good The intensity with which this LED lights is pr...

Page 6: ...the unit upside down and carefully remove the base plate Remove the battery from the unit being careful not to strain the battery leads Disconnect the battery and connect a new one Position the newly connected battery back in the unit and reassemble with care We recommend that you use only alkaline type batteries to prevent any type of leakage that may damage the MCT 7 Cable Tester ...

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