NEC ELECTRA ELITE IPK II, Руководство по аппаратному обеспечению системы, Страница: 415 / 642

Electra Elite IPK II Document Revision 3
System Hardware Manual 9 - 9
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Table 9-1 AD(A)-R Unit Cable Connections
Terminal
Number
Cables to Connect Terminal Specifications
T1 When warning tone is not being
sent from 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
AD(A)-R on T3:T4 over a separate
wire pair to the recorder. Input Terminal: T1 and T2 are enabled
for tone generating device when
switches SW1-3 and SW1-4 are OFF.
When switches SW1- 3 and SW1-4 are
ON, a humming sound may be recorded
due to impedance mismatch.
Input Impedance on T1 and T2: 100K
Ω
Input Level on T1 and T2: –15 dB ~ 40
dB
T2
T3:T4 Connect recorder device wire pair
speech input to T3:T4.
When the recorder used supplies a
warning tone, this tone may also be
sent over the T3:T4 wire pair back
to the terminal. Input/Output Terminal:
Refer to dip switch settings in
Table 9-2
AD(A)-R Unit Switch Settings .
T5 Connect the bare end of the control
cable. 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 recording device owner’s manual
specifies start on open circuit, connect
T5 and T6.
T6 Connect the shielded end of the
control cable. Provides common connection for
control cable.
T7 Connect the bare end of the 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 recording device owner’s manual
specifies start on closed circuit, connect
T6 and T7.
T8
Unused
T9