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Issue 6
Terminal
Number
When warning tone is not being sent from
T1
the recorder, connect wire pair input from
tone generator to T1:T2. The warning
tones from the generator are sent to T1:T2
on a dedicated wire pair while the speech
path is sent from the ADA-U on T3:T4 over
a separate wire pair to the recorder.
T2
Connect recorder device wire pair speech
input to T3:T4.
When the recorder used supplies a
T3:T4
warning tone, this tone may also be sent
over the T3:T4 wire pair back to the
terminal.
Connect the bare end of the control cable.
T5
Connect the shielded end of the control
T6
cable.
Connect the bare end of the control cable.
T7
T8
Unused
T9
Unused
7 - 10
Table 7-1 ADA-U Cable Connections
Cables to Connect
Terminal Specifications
Input Terminal:
T1 and T2 are enabled for tone generating device
when DIP switches 3 and 4 are OFF.
(When switches 3 and 4 are ON, a humming sound
may be recorded due to impedance mismatch.)
Input Impedance on T1 and T2: 100K
Input Level on T1 and T2: –15 dB ~ 40 dB
Input/Output Terminal:
Refer to dip switch settings in
Switch
Settings.
When a Multiline Terminal is idle, this contact is
closed. When the Multiline Terminal goes off-hook
(using the handset, headset, or speakerphone), this
contact is open.
When recorder owner manual specifies start on
open circuit, connect T5 and T6.
Provides common connection for control cable.
When the Multiline Terminal is idle, this contact is
open. When the Multiline Terminal is busy (using
the handset, headset, or speakerphone), this
contact is closed.
When recorder owner manual specifies start on
closed circuit, connect T6 and T7.
Installing Optional Equipment
Electra Elite
Table 7-2 ADA-U Unit
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