Wire Map
Delay/Skew
Resistance Unbalance
Loop Resistance
Transverse Conversion Loss
Return Loss
Insertion Loss, NEXT, FEXT, ACRN, ACRF

It might not be wise to connect the CONT port to anything else than supplied wiremap plug for wire map testing. I know several other cable wiremap testers that would not like be connected to network with PoE in it (would potentially fry the tester), but I am not sure if this CONT port is properly protected against PoE voltages or not in this tester.

can it be safely used to track and test cables while connected to PoE powered switchports? Any risk to damage the tool or the switchport doing so?

Thanks

You may already know this, but many Aruba/HP/Procurve switches have TDR built-in. You can run a cable diagnostic on the port and it will tell you how long until a cable break (unconnected end, for example) within a reasonable precision (a few yards).

https://community.arubanetworks.com/t5/Wired-Networks/Time-Domain-Reflectometer-in-Aruba-Switch/ta-p/233818

I know some of the recent firmware upgrades have added this to some of the Procurve (rebranded to Aruba) switches. It’s obviously not going to be in much older switches. Check the particular switch docs for the syntax.

Network cable tester teardown
https://www.youtube.com/watch?v=pe7kXAF_FW8

Network cable testers from eBay. Buy cheap, buy twice!
Save your money and buy a different model, as it doesn’t take much to kill these ones.

INDEX
0:10 Introduction: Cheap network cable testers from eBay
0:25 What’s fried them? Probably not PoE
1:17 How they’re supposed to work
3:08 How they’re NOT supposed to work
3:35 What’s inside?
4:12 Receiver schematic
4:43 Emitter schematic
5:00 Wire mapper theory of operation
6:32 Tone generator theory of operation
7:41 Scoping the tone outputs
8:02 Design flaw: is the tone generator cooking the wire mapper?
8:40 A simple suggestion for improvement
9:43 Scoping the faulty tone generators
9:58 Hotspot spotting with a thermal camera
11:40 Power consumption testing
13:37 Testing with tone generator removed
14:50 Testing with tone generator re-added and wire mapper removed
15:56 Removing even more tone generator
16:15 Wire mapping into a network switch? No problem
16:52 Tone generating into a network switch? Magic smoke time!
17:43 Conclusions

1. Product name: Mastech MS6818 Portable Professional Wire Cable Tracker
2. Product name: NOYAFA NF-8601S TDR Tester Network Cable Tester Tracker
3. Product name: NOYAFA NF-8209 LCD Display Measure Length Lan Cable POE Wire Checker
4. Product name: NOYAFA NF-858C Trace Cable Line Locator Portable Wire Tracker
5. Product name: NOYAFA NF-308 Measure Network LAN Cable Length Cables

Main features
1. Two scan modes selectable: AC filter & Non AC filter
2. Detect AC voltage presence (50V-1000V).
3. Test physical status for STP, UTP lan cable.
4. Measure cable length accurately , the range is 200m.
5. Hub blink for locating network port by the flashing port light on Hub / Switch. Available to 10M/100M/1000M Hub/ switch.
6. PoE testing : identify which pins are providing power and detect how much voltage, identify which the type of PSE (at/af standard)