background image

20

Cable Faults

Description

Up/Down

The Up/Down buttons allow you to adjust the cable length 

within the range of 10 m – 300 m or 25 ft to 1000 ft. 

 

Press the UP and DOWN buttons to increment or 

decrement the length. 

 

Press and hold the UP or DOWN button to quickly 

increase or decrease the cable length.

Calibration

Press the CAL button to increase cable length in 50 ft or 

20 m increments according to the unit of measurement 

selected (feet or meters). 

Table 10. 

Adjusting Cable Length. 

4.  Verify the Snap Shot™ is set to your desired unit of measurement (feet 

or meters). To change the unit of measurement, press and hold down 

the MEM and CAL buttons simultaneously for two seconds. The unit of 

measurement will adjust in the LCD display screen.  

5. 

Enter the length of the attached cable. See Table 10 for a description of 

how to adjust cable length using the Up/Down and Calibration buttons.

Note: 

Once the maximum length (1,000 ft or 300 m) is reached 

through use of the CAL button, a subsequent press of the 

button adjusts the cable length to the default cable length (50 

ft or 20 m). 

 

To abort Calibration Mode and retain your previous inputted 

cable length, press and hold down the CAL button. The unit 

defaults to Test Mode. 

6.  Press the TEST mode button. The following updates occur in the LCD 

display screen (see Figure 6):

 

The three dashes in the lower left corner disappear. The calcu-

lated NVP value for the inputted cable length appears in place 

of the three dashes.

 

The cable length displays in the upper right corner. 

 

The Memory Storage location last selected (M1 or M2) appears 

above the NVP value.

 

The adjustment indicator icon appears in the lower left corner.  

 

The “Open” icon displays as Calibration Mode is used with 

unterminated cables only.

Содержание Snap Shot

Страница 1: ...stem up to 3 000 ft Memory Holds up to two different NVP values for multiple cable tests Calibration Ability to calculate NVP for any known cable length Test Tests length opens or shorts present on th...

Страница 2: ...5 Cable Testing General Guidelines 16 Using Memory Storage 16 Recalling Stored NVP Values 17 Adjusting NVP Values 18 Using Calibration Mode 19 Using Test Mode 22 Using Loop Testing 24 Using Tone Mode...

Страница 3: ...ctrum Time Domain Reflectometry SSTDR Symbols Icons The following symbols are used throughout the manual or in the display screen of the Snap Shot to help you avoid personal injury and potential damag...

Страница 4: ...45 volts RMS F Connector Connector for a coaxial cable Spread Spectrum Time Domain Reflectometry SSTDR Spread spectrum is the technological foundation of cell phone communications and is used to tran...

Страница 5: ...cabling systems with or without voltage The Voltage Icon turns on when the voltage exceeds Safety Extra Low Voltage SELV rating of 60 volts peak AC or DC Internal components are protected up to 400 vo...

Страница 6: ...ction for a listing of additional products that can help make testing easier Table 4 Snap Shot Equipment and Accessories EQUIPMENT AND ACCESSORIES Accessory Product Number Description TAD001 F connect...

Страница 7: ...screen with icons that clearly display test results Tests any copper cable including data voice video lamp wire and romex cables Discovers NVP value for cables with known length Automatic pre test vo...

Страница 8: ...ables Note Additional accessories are provided with your purchase of the Snap Shot for use with twisted pair coaxial and two wire cables Refer to the Cable Testing General Guidelines section of the ma...

Страница 9: ...rage and related icons NVP value cable faults error message voltage detection warning and battery life indicator Test Mode When the TEST button is pressed the measured cable length in units of feet or...

Страница 10: ...lue Cable Length The cable length displayed in feet or meters ap pears in the upper right corner of the display screen When a cable is not attached to the Snap Shot the length will read 0 Note Refer t...

Страница 11: ...eet or meters in the top row of the LCD display screen Adjustment Indicator The adjustment indicator icon denoted by two Up Down arrows indicates that cable length can be adjusted while in Calibration...

Страница 12: ...Shot will turn off if the power supply goes out of regulation from a low battery condition Voltage Detected Warning Voltage The Voltage icon appears in the lower right corner of the display screen wh...

Страница 13: ...ue to a properly terminated cable or excess signal loss Note Refer to the Using Calibration Mode and Using Test Mode sections for trouble shooting the Error message when using either of these modes Ke...

Страница 14: ...measurement feet and meters Test The Test button initiates length testing on the connected cable A short press runs a single test on demand A long press two seconds of the button starts continuous te...

Страница 15: ...d of inactivity to conserve battery power The automatic power down feature is dependent on which mode is in use and if voltage is detected on the cable being tested see Table 9 Table 9 Automatic Power...

Страница 16: ...e top of unit Then attach the proper Cable Assembly to Alligator Clip accessory Important Safety Points The Voltage Icon appears when the voltage surpasses SELV rating of 60 volts peak AC or DC It is...

Страница 17: ...4 LCD Display Screen in Memory Storage Recalling Stored NVP Values 1 Connect one end of the cable to the Snap Shot Use connection accessories according to the type of cable you are testing 2 Press the...

Страница 18: ...Refer to Appendix A for an extended listing of NVP values Use Calibration Mode to set the NVP value if the length of the cable is known Refer to the Using Calibration Mode section for instructions on...

Страница 19: ...f detected a dynamic voltage warning displays until the unit is disconnected from the voltage source 1 Connect a cable to the Snap Shot Use connection accessories according to the type of cable you ar...

Страница 20: ...ached cable See Table 10 for a description of how to adjust cable length using the Up Down and Calibration buttons Note Once the maximum length 1 000 ft or 300 m is reached through use of the CAL butt...

Страница 21: ...m of the LCD display screen see Figure 7 The unit recalls the last calculated NVP value The Snap Shot exits Calibration Mode and enters Test Mode The last cable result displays at the top of the scree...

Страница 22: ...e Snap Shot Use connection accessories according to the type of cable you are testing Note Connection to the cable should be as short as possible to minimize the impedance discontinuity at the cable a...

Страница 23: ...le is terminated Excess signal loss Figure 8 LCD Display Screen in Test Mode Figure 9 Error in Test Mode The measured cable length in units of feet or meters The storage location M1 or M2 with its ass...

Страница 24: ...ting the NVP value 4 Press and hold down the TEST button for two seconds to run a con tinuous test The following values and icons appear in the LCD display screen see Figure 10 The LOOP message flashe...

Страница 25: ...o the type of cable you are testing 2 Press the POWER button to turn the unit ON 3 Press the TONE button The LCD display screen updates with the following symbols and icons see Figure 11 Two musical n...

Страница 26: ...attery door Doing so can damage the test unit Cleaning Use a damp clean cloth to clean the test unit Disconnect all cables from the Snap Shot prior to cleaning Failing to do so can damage the unit and...

Страница 27: ...umbers Phone 805 384 2777 Fax 805 749 5784 Address 806 Calle Plano Camarillo CA 93012 Additional Accessories The list of accessories below see Table 11 will assist you with operating the Snap Shot The...

Страница 28: ...rial and workmanship This warranty extends for the period stated on the package from the date of manufacture or proof of purchase Products deemed defective under this warranty will be repaired or repl...

Страница 29: ...parameters Maximum Length 3 000 ft on cables with low attenuation Common Cable Length Ranges Coaxial Cable 0 to 2 000 feet Data Cable 0 to 1 500 feet Electrical Cable 0 to 1 000 feet Tone Generation...

Страница 30: ...P Values by Cable Type Cable Type NVP Range Coaxial Cables RG58 65 4 64 5 66 4 RG59 83 9 83 0 85 0 RG6U 84 6 83 5 85 5 RG6 Quad Shield 84 9 84 0 86 0 Phone Cables CAT3 4 Pair 67 3 65 5 68 0 CAT3 3 Pai...

Страница 31: ...3 7 63 0 64 5 12 3 Romex Uncoiled 70 6 69 5 71 5 12 3 Romex Twisted Coiled 68 4 67 8 69 4 12 3 Romex Twisted Uncoiled 68 4 67 8 69 0 14 2 Romex Coiled 66 4 65 0 68 6 14 2 Romex Uncoiled 71 9 71 0 73 0...

Отзывы: