Panasonic WV-SW458 Installation Manual page 26

z
• Connecting an external microphone and an external speaker
Connect the microphone/line input cable and the microphone.
Input impedance:
Recommended cable length: Less than 1 m {3.3 feet} (for microphone input)
Recommended microphone: Plug-in power type microphone (option)
• Supply voltage:
• Recommended sensitivity
of microphone:
IMPORTANT:
• Connect/disconnect the external speaker cables or audio cables after turning off the power of
the camera and the amplifier. Otherwise, loud noise may come out from the speaker.
x
Connect an external amplifier-embedded speaker to the audio output cable.
Connect a stereo mini plug (ø3.5 mm) (Audio output is monaural.).
• Recommended cable length: 10 m {33 feet} or less
c
• Connecting an External I/O terminal
Connect the alarm input/output cable.
<Ratings>
Terminal name
ALARM OUT, AUX OUT
Open
Close
ALARM IN
Off
On
Note:
• Check if rating of an external device such as a sensor is applicable to the rating of this
product by referring to the provided operating instructions.
26
2 kΩ±10 %
Less than 10 m {33 feet} (for line input)
Connect a monaural mini plug (ø3.5 mm).
2.5 V ±0.5 V
−48 dB ±3 dB (0 dB=1 V/Pa,1 kHz)
Ratings
Open collector output (maximum applied voltage: 20 V DC)
4 V DC - 5 V DC by internal pull-up
Output voltage 1 V DC or less (50 mA or less)
Non-voltage make contact input (4 V DC - 5 V DC, internally pulled
up)
Open or 4 V DC - 5 V DC
Make contact with GND (required drive current: 1 mA or more)