Not so good for accurate level checking then.
Cheers
Ian
Approx. 10 years ago, a new studio client showed me his Behringer CT-100 and I was impressed enough to add it to my test kit, especially after I bought a new one from an online store for $30.00 including shipping.
I knew from the start it wasn't an "Audio Precision caliber" device. Just listening I could tell it didn't produce a sine wave. Later tests with a scope and different load resistors indicated the output square wave signal was seriously compromised into a low Z load (say, 600 Ohms) as if there was a SERIOUSLY undersized coupling cap at the output circuit. The output signal levels were also imprecise, especially with a low Z load.
BUT!.....
1. The portability is great when walking through wiring in a studio or with a PA system and you need go/no-go verification via injecting a signal..
2. The cable testing functions have been quite handy. I fight when building cables with RCA connectors so the "wiggle the connectors" and the AutoMagic intermittent-sensing always detect my problems which are difficult to see with a DVM/VOM.
3. I tell my studio clients to have one on-site for cable tests since very little skill is needed. Test tones are an added bonus even though the actual signal levels are only Ballpark.
A Minirator would be ideal, but check out the prices!
https://shop.nti-audio.com/cat-generators-sources.cfmBri
PS, it appears the CT-100 is a clone of the Ebtech:
https://www.morleyproducts.com/6-in-1-cable-tester/