AD-2039C Bothhand USA, LP, AD-2039C Datasheet - Page 5

• Manufacturer Part Number: AD-2039C
• Description: Adsl Cpe Side Splitter
• Manufacturer: Bothhand USA, LP

undesirable reflection and echoes which in long distance circuit the telephone user or destroy
the date being sent To perform the return loss test ,open ,short, load calibration must be done
prior measurement while the LCZ impedance Analyzer being selected in impedance mode.
Return loss is general expressed in decibels. General Return loss equation as below.
The test setup is shown in drawing below:
Figure 2
1:ZNL-r=1330 ohm in parallel with series connection of a 348ohrn resistor and a 100nF
2:ZH-r is the impedance presented to the POTS connection by an ATU-R.
ADSL CPE SIDE SPLITTER
P/N: AD-2039C DATA SHEET
capacitor (long loop model seen from RT).
B o t h h a n d U S A . e - m a i l : s a l e s @ b o t h h a n d u s a . c o m h t t p : / / w w w . b o t h h a n d . c o m
Return loss=20 log｜ ZNLr + Zm / ZNLr- Zm ︱dB
Where ZNL = the reference impedance
900ohrn
2.16uF
+
462 Boston St - Topsfield, MA 01983 - Phone: [phone] - Fax: [phone]
TEST
Loop
xDSL
Remote POTS Splitter
ZH-r
Zm= the measured impedance
LPF
Returloss reference impedance
TEST Equipment
ZNL-r
BOTHHAND
USA