AD-2039C Bothhand USA, LP, AD-2039C Datasheet - Page 4

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

Return loss:
The Return Loss is measure of the driving point impedance variation introduced by the filter,
variation of the driving point impedance of the loop can affect POTS performance by changing
the sidetone balance of a telephone instrument or the front end hybrid balance of voiceband
modern.
This test measure three specific frequency weighted return loss value each return
loss(ERL)low-band singing return loss(SRL-L), and high-band singing return loss(SRL-H).
For detailed description of the weighting functions see IEEE743-1985.
Return loss measure the amount of energy that is lost due to reflection which resulted from
impedance mismatching at the interface. Return loss is essentially defined as the ratio of the
power incident upon a given transmission system to the power reflected caused by impedance
mismatch with respect to reference impedance at the interface between source and device.
Return loss figure are a function of the impedance of the circuit involved and are therefore
frequency dependent.
These impedance must be closely maintained in order to reduce the possibility of
ADSL CPE SIDE SPLITTER
P/N: AD-2039C DATA SHEET
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
900 Ohm
Note : ZH-r is the impedance presented to the POTS connection by an TAU-R
ZTr
462 Boston St - Topsfield, MA 01983 - Phone: [phone] - Fax: [phone]
TEST
Loop
Figure 1
Remote POTS Splitter
(Load)
ZH-r
xDSL
LPF
equipme
TEST
Termination in test
BOTHHAND
USA
ZTr is the normal
600 Ohm
ZTr
set