RTS User Station MCE-325, Инструкция пользователя

Страница: 31 / 38

MCE-325 Programmable User Station Installation 31
Bosch Security Systems, Inc. Technical Manual F.01U.193.228 Rev. 13
External DC Power Source
The MCE-325 may be powered an external DC power supply in the 10 to 25 volt range (500mA minimum).
NOTE: If the external supply is in the 10 to 15 volt range, connect the positive lead to pin 13 of the auxiliary connector
and connect the minus lead to pin 10 or 11. A 0.5Amp slo-blo fuse should be connected in-line for 15 to 25 volt
operation.
If the external supply is in the 15 to 25 volt range, connect the positive lead to pin 23 of the auxiliary connector
and connect the minus lead to pin 10 or 11.
Remote Speaker Mute Control
When the MCE-325 is used with an external speaker, the speaker may be muted from a remote location. Applying a logic low
signal to pin 25 of the auxiliary connector causes muting. Connect circuit common to pin 11.
Front Panel Headset Connections
Headset Requirements
Use headphones with an impedance of 25
Ω
or greater. Low impedance 8
Ω
headphones are not recommended. Headphones
with good acoustic isolation (24 to 40dB) improve communication in high ambient noise environments, and allow the user to
use the headphones at a less tiring, lower volume.
Headset Connections
Dynamic-microphone headset connector: XLR-6 type receptacle.
Carbon-microphone headset connector: ¼-inch, tip-ring-sleeve phone jack.
TABLE 10.
Dynamic-microphone headset connector
Pin # Function
1 Balanced Mic Low/unbalanced Mic Common
2 Balanced/unbalanced Mic High
3 Headphone/mic Switch Common
4 Headphone Left
5 Headphone Right
6 Mic Switch High
TABLE 11.
Carbon-microphone headset connector
Section Function
Tip Carbon Microphone
Ring Headphone
Sleeve Common/Ground