Hubbell GAI-TRONICS RED ALERT 393-001CAM, Руководство пользователя

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Pub. 42004-467D
Camera Telephone Manual Page 14 of 30
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-467D.docx
04/19
Polarity
Factory Setting : Non-polarity sensitive
The telephone can be configured as polarity or non-polarity sensitive. The telephone operates regardless
of tip and ring polarity when configured for non-polarity. The telephone will only operate when the
telephone line’s positive terminal is connected to the tip terminal when configured for polarity. Use the
polarity sensitive setting to allow a line voltage reversal disconnect signal to disconnect the call.
•
Non-polarity Sensitive : jumper
J6
in position NON
•
Polarity Sensitive : jumper
J6
on in position POL
DTMF Gain Select
Factory Setting : Low gain selected
Two gain selections are available in the DTMF detection circuit. The low gain setting is recommended
for most installations. The high gain setting may be necessary if the telephone does not respond to
manual or TMA-generated DTMF commands.
•
Low Gain Selected : jumper
J17
in position LO
•
High Gain Selected : jumper
J17
in position HI
Password Enable/Disable
Factory Setting : Password enabled
This telephone can be configured to enable or disable the password protection for programming (standard
mode only). This can be useful when initially programming the telephones.
•
Password Enabled : jumper J9 jumper in position EN
•
Password Disabled : jumper
J9
in position DIS
Command Select
Factory Setting: Auto
Jumper J20 enables or disables the automatic transition to SMART operation. SMART operation is
disabled when the jumper in the STD position.
•
SMART Operation Enabled (Auto) : jumper J20 in position AUTO
•
SMART Operation Disabled (Standard) : jumper
J20
in position STD
Low-Power Mode
Factory Setting : Low-power mode disabled
The performance of the telephone may be improved for installations with minimal loop current available
by enabling this feature. Symptoms of minimal loop current may include low speaker volume and/or
momentary muting of audio. The low-power mode should be disabled in most applications. The low-
power mode is enabled by installing the following three jumpers:
J21 , J22 , and J23 .
•
Low-Power Mode Enabled : jumpers installed at J21 , J22 , and J23
•
Low-Power Mode Disabled : jumpers NOT installed at J21 , J22 , and J23