EXFO CableSHARK P3 VF/DSL Cable Qualifier - Manual (Page 243)

CableSHARK P3 User Guide
231
15.3 Noise Test
The Noise function allows a user to measure RMS noise on the circuit under test.
To measure Noise, select the VF TESTS option from the CABLE TESTS pop-up menu. Select RECEIVE
TONE from the VF TESTS sub-menu. To continue, press RUN/STOP.
SEND TONE
600 OHMS
C NOTCHED
dBrnC
EDIT /
SELECT MAIN
MENU
Test Type :
Term Impedance:
Noise Filter:
Measurement Units:
E F CHG
NOISE
F IGURE 15.3A - S ETTING U P NOISE TEST
The VF TEST menu has the following configuration option.
TEST TYPE: Select NOISE
TERM IMP: 600 ohms (or 100, 150 ohms if your unit does not have 600 ohms installed).
Noise Filter Allows user to select from NONE, C-Message, C-Notched, 3 kHz Flat, 15 kHz
Flat, 50 kbit, and IEEE 743 D Filter. For ITU, Psophometric and P-Notched are
available.
Measurement
Units: Allows user to select from displaying results in dBm or dBrnC.