December 2009 CLM5000 Cable Length Meter Use to measure cable length and generate tone BLACK on industrial, telco, and coax cable (notBOX CATx). ® Works on single- or two-conductor cables. Compact, handheld unit. Customer Support Information Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S.
FCC and IC RFI Statements FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio-frequency energy, and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication.
Cable Length Meter Normas Oficiales Mexicanas (NOM)Electrical Safety Statement INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura. 3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas. 4. Todas las instrucciones de operación y uso deben ser seguidas. 5.
NOM Statement 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato. 14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante. 15.
Cable Length Meter Trademarks Used in This Manual Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners. Page 4 724-746-5500 | blackbox.
Table of Contents Chapter Page 1. Specifications...............................................................................6 2. Overview.....................................................................................8 2.1 Introduction...........................................................................8 2.2 Features.................................................................................8 2.3 What’s Included....................................................................9 2.
Cable Length Meter 1. Specifications Cable Types: Single or dual conductor, 8–30 AWG, network, coax, and telco Temperature Tolerance: Operating: 32 to 122° F (0 to 50° C); Storage: +14 to +140°F (-10 to +60° C) Humidity: 10 to 90%, noncondensing Power: (1) 9-V alkaline battery: Standby: 2.5 years; Cable Testing: 20 hours into 60-ohm load (smaller resistance loads will result in shorter battery life) High-Voltage Protection: 120 VAC maximum Size: 1.3"H x 3"W x 6"D (3.3 x 7.6 x 15.2 cm) Weight: 11.5 oz.
Chapter 1: Specifications Table 1-2. Length measurement range DC (resistance 0–635 ohms). AWG Min. (ft.) Length Tolerance 8, 10 5.0 0-9999 ft. (3047 m) ±2%, ±3 LSD* 12, 14, 16 4.0 0–9999 ft. (3047 m) ±2%, ±3 LSD 18, 20, 22 3.0 0–9999 ft. (3047 m) ±2%, ±3 LSD 24, 26, 28 1.0 0–9999 ft. (3047 m) ±2%, ±3 LSD 30 1.0 0–5879 ft. (1792 m) ±2%, ±3 LSD *LSD = Least significant digit 724-746-5500 | blackbox.
Cable Length Meter 2. Overview 2.1 Introduction The Cable Length Meter for industrial, network, telco, and coax cable (not CATx) is an easy-to-use, versatile compact handheld unit that measures cable length and generates tone. It works on single- or two-conductor cables for testing and troubleshooting. CAUTION: Do not attach test leads to energized cables. The Cable Length Meter might be damaged. 2.
Chapter 2: Overview 2.3 What’s Included • (1) Cable Length Meter • (1) double-banana to BNC + BNC F to F jack • (2) test leads • (2) clips • (1) carrying pouch 2.4 Hardware Description Figure 2-1 illustrates the Cable Length Meter. 6. Heavy-Duty Test Leads 1. Large LCD Display 2. Test Lead Calibration Button 3. Up Button 7. Mode Select Button 8. Copper/Aluminum Distance Button 9. Down Button 4. Power Button 5. Pair/Single Conductor Button 10. Set Wire Length Button Figure 2-1. Cable Length Meter.
Cable Length Meter 3. General Functions 3.1 PWR Key and Auto Power Off Press the PWR key to turn the unit on and off. If no keys have been pressed, the Cable Length Meter powers off automatically after 10 minutes. The timer resets every time you press a key. In Tone mode, the unit will automatically power off after 1 hour. 3.2 Mode Key The Cable Length Meter operates in eight modes.
Chapter 3: General Functions 3.4 LCD Display Icons Table 3-1 describes the icons that appear on the LCD display. Table 3-1. LCD display icons. Icon Description Coax mode Telco mode Network mode Tone mode Two-conductor icon (AWG/mm/mm2 mode) One-conductor icon (AWG/mm/mm2 mode) Short symbol, indicates the presence of a short between two conductors. An audible tone is also generated. (Coax, Telco, and Network mode) Unit detects voltage on the line Battery low icon.
Cable Length Meter 4. Using the Cable Length Meter 4.1 AWG Mode This mode allows length measurements from 8 to 30 AWG (8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, and 30 AWG). Use the UP/DOWN keys to scroll through the various wire gauges. Select from copper or aluminum type wires and meters or feet. Figure 4-1 shows a typical AWG Mode screen. Figure 4-1. AWG Mode screen. Page 12 724-746-5500 | blackbox.
Chapter 4: Using the Cable Length Meter Table 4-1. AWG/mm/mm2 cross-reference data. AWG Diameter (mm) Area (mm2) #8 3.264 8.37 #9 2.906 6.63 #10 2.588 5.26 #11 2.305 4.17 #12 2.053 3.31 #13 1.828 2.62 #14 1.628 2.08 #15 1.450 1.65 #16 1.291 1.31 #17 1.150 1.04 #18 1.024 0.823 #19 0.912 0.653 #20 0.812 0.518 #21 0.723 0.410 #22 0.644 0.326 #23 0.573 0.258 #24 0.511 0.205 #25 0.455 0.162 #26 0.405 0.129 #27 0.361 0.102 #28 0.321 0.081 #29 0.
Cable Length Meter 4.2 Pair SGL Key The Cable Length Meter can measure single- or two-conductor wires. Press the PAIR SGL key to toggle between single or two conductor. For single-conductor measurement, the unit is connected at both ends of the wire/conductor. For twoconductor measurements, the unit is connected one end of the wire and the other end of the pair is shorted (wire length = total resistance/2).
Chapter 4: Using the Cable Length Meter 3. Press the SET LEN (LEN = Length) key, and the Set Length screen (Figure 4-2) appears. In this mode, use the UP/DWN keys to adjust the larger digits to match the length of the sample wire (100–200 ft. range). If the sample wire is 150 feet and its resistance is equal to 0.315 ohms, the smaller digits on the left-hand side of the screen will display “0.0021 ohms/ft. (150 feet/0.315 ohms = 0.0021 ohms/ ft.) 4.
Cable Length Meter 4.3 Coax, Network, and Telco Modes Coax, Network, and Telco modes detect the distance to opens and the distance to shorts. The Cable Length Meter determines the length by measuring line capacitance when the line is open or by measuring resistance when the line is shorted. When measuring opens, use the UP/DOWN keys to adjust the capacitance coefficient (10 to 40 pf per feet) to calculate the cable length.
Chapter 4: Using the Cable Length Meter Example: The factory default for Network wire is .0273 ohms per feet. Press the MODE key to select Network mode. Press the SET LEN (LEN = Length) key, and a new screen will pop up (see Figure 4-4). In this mode, use the UP/DOWN keys to adjust the larger digits to match the length of the sample wire (100–200 feet range). If the sample wire is 150 feet and its resistance is equal to .315 ohms, the smaller digits on the left hand side of the screen will display “002.
Cable Length Meter Changing Opens/Capacitance Coefficient Using Set Length To change capacitance coefficients, follow the steps above (cable/wire must be open) based on the sample wire (100 to 200 feet). The Cable Length Meter measures the total capacitance of the cable and displays the value in the lower lefthand corner of the LCD (the cable must be within 10 to 40 pf per feet range, otherwise meter will indicate OL). Table 4-3. Opens/shorts factory default values.
Chapter 4: Using the Cable Length Meter 4. Warble tones, low tone for 365 ms, followed by 65 ms of high tone. Figure 4-6. Tone Mode screen. 4.5 Calibrating the Test Lead 1. Hold down the LEAD CAL key until the unit displays CAL. The unit will display CAL for a few seconds then display Shrt Lead. 2. Short the leads as illustrated Figure 4-7. Once connected properly to the bus wire, press the LEAD CAL key again. The unit will beep and display OPEN LEAD. 3. Disconnect the leads from the short.
Cable Length Meter Test Clips 8–14 AWG Bus Wire Test Clips Figure 4-7. Wire under test. NOTE: Make sure the wire surface is clean and the clips are making good contact. For best results, use solid wire 8 to 14 AWG. Make sure clips are as close together as possible. Page 20 724-746-5500 | blackbox.
Chapter 5: Installing the Battery 5. Installing the Battery Batteries are not included. Use only an alkaline 9-volt battery. When installing a new battery, disconnect any test cables connected to the Cable Length Meter. (See Figure 5-1.) 1. Using a #2 Phillips screwdriver, unscrew the battery cover screw and remove the battery cover on the back of the unit. 2. Remove the old battery from the battery compartment and detach the battery cap. 3. Connect a new alkaline 9-volt battery to the battery cap. 4.
Cable Length Meter 6. Troubleshooting 6.1 Calling Black Box If you determine that your Cable Length Meter is malfunctioning, do not attempt to alter or repair the unit. It contains no user-serviceable parts. Contact Black Box Technical Support at 724-746-5500. Before you do, make a record of the history of the problem. We will be able to provide more efficient and accurate assistance if you have a complete description, including: • the nature and duration of the problem. • when the problem occurs.
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