CM-100 - Cable tester Jonard Tools - Free user manual and instructions
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| Product Type | Cable Tester |
| Brand | Jonard Tools |
| Model | CM-100 |
| Category | Cable Tester |
| Supported Connectors | RJ45, RJ11, RJ12 |
| Display | LED indicators |
| Power Supply | 9V alkaline battery |
| Main Functions | Continuity testing, wire mapping, open/short/miswire detection |
| Operating Temperature | 0°C to 40°C |
| Main Unit Dimensions | 140 x 70 x 30 mm (approx.) |
| Remote Unit Dimensions | 110 x 60 x 25 mm (approx.) |
| Total Weight | 300 g (approx.) |
| Max Cable Length | 300 m (approx.) |
| Auto Power Off | Yes |
| Maintenance | Use a soft, dry cloth to clean the exterior |
| Safety | Do not test live circuits |
| Spare Parts | No user-serviceable parts |
| Repairability | Contact Jonard Tools support for service |
| General Information | Designed for network and telephone cable installation |
Frequently Asked Questions - CM-100 Jonard Tools
What types of cables can the CM-100 test?
The CM-100 cable tester supports RJ45, RJ11, and RJ12 connectors, making it suitable for Ethernet and telephone cables.
How do I perform a wire map test?
Connect the main unit to one end and the remote to the other. Turn on the tester, and the LED indicators will light in sequence to verify correct wiring. Compare the pattern to the wire map diagram printed on the device.
What does the remote unit do?
The remote unit is used to test cables from a distant endpoint. It mirrors the connection status and helps identify opens, shorts, and miswires without requiring a second person at the main unit.
How do I test a cable with RJ11 connectors?
Insert the RJ11 connector into the RJ11 port on both units. Set the selector to the proper mode, then press the test button. The LEDs will indicate continuity and correct pair mapping.
Can the CM-100 test shielded cables?
Yes, the CM-100 can test shielded cables if the shield is properly terminated. Use the corresponding port and follow the wire map sequence.
How long does the battery last?
A standard 9V alkaline battery typically lasts for about 20 hours of continuous use, depending on the test mode. The unit has an auto-off feature to extend battery life.
What do the LED indicators mean?
Each LED indicator corresponds to a wire position. A steady light indicates a solid connection, a flashing light may indicate a fault, and no light means an open circuit.
Can I test an active network connection?
No, never test an energized circuit. The CM-100 is designed for unpowered cables only. Connecting to a live network can damage the tester and create a safety risk.
How do I clean the device?
To clean the device, use a soft, dry cloth to wipe the outer surfaces. Do not use solvents or abrasive cleaners, as they may damage the housing or the LED indicators.
What should I do if the tester fails to power on?
First, replace the 9V battery with a fresh one. Ensure the battery is correctly oriented. If the unit still does not turn on, check for corrosion in the battery compartment. If problems persist, contact Jonard Tools support.
User questions about CM-100 Jonard Tools
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USER MANUAL CM-100 Jonard Tools
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Product information
Brand : Jonard Tools
Model : CM-100
Category : Cable tester