Aspect TDMHA.00, Installation Manual

Page: 10 / 25

Headset Adapter Installation Guide
4-22-2008 3205-10084B Page 6
Switch 4 (SIDTN) is used to enable and disable the sidetone feedback. In the up position, a
small amount of the user’s voice is returned to the user’s ear. The down position will
disable* the sidetone feedback.
Note: *This switch can be disabled with the internal enable/disable switch jumper.
Switches 5 and 6 (XSET2, XSET1) are used to set the transmitted output audio level from
the headset microphones to the CODECs. This is useful for headset amplifiers that do not
have an adequate range of adjustment. Caution should be exercised with the settings of
these switches. Crosstalk and noise, from the cabling, may be noticeable in longer cables
with the higher level switch settings. For the best results, adjust the headset amplifier
microphone gain adjust to the highest usable setting and then adjust the (XSETx) switches
for the lowest usable level. This will reduce the cable noise and crosstalk to a minimum.
Note: This switch can be disabled with the internal enable/disable switch jumper.
ƒ
XSET2 XSET1 AUDIO GAIN
ƒ
UP UP = + 4 DB
ƒ
UP DOWN = 0 DB default *
ƒ
DOWN UP = - 5 DB
ƒ
DOWN DOWN = - 10 DB
* Note: This is the value that will be observed when the internal jumper is in the disable
switches position.
Rotary switch (RSET) is used to set the receive input audio level to the users headsets. This
is useful for headset amplifiers that do not have an adequate range of adjustment. Caution
should be exercised with the settings of these switches. Crosstalk and noise, from the
cabling, may be noticeable in longer cables with the higher level switch settings. For the
best results, adjust the headset amplifiers earphone volume adjust to the highest setting
and then adjust the (RSET) switch for the lowest usable level. This will reduce the cable
noise and crosstalk to a minimum.
Note: This switch can be disabled with the internal enable/disable switch jumper.
ƒ
RSET AUDIO GAIN
ƒ
0 = - 4 DB
ƒ
1 = - 2 DB
ƒ
2 = 0 DB default *
ƒ
3 = + 2 DB
ƒ
4 = + 4 DB
ƒ
5 = + 6 DB
ƒ
6 = + 8 DB
ƒ
7 = + 10 DB
ƒ
8 = + 12 DB
ƒ
9 = + 14 DB
* Note: This is the value that will be observed when the internal jumper is in the disable
switches position.