12 Description & Specifications
MCE-325 Programmable User Station
Bosch Security Systems, Inc.
Technical Manual
F.01U.193.228
Rev. 13
MCE-325 Specifications
General
Bridging Impedance (to line) ................................................................................................................................10,000
Ω
typical
Noise Contribution to 200
Ω
Line.......................................................................................................................................-90dBu
Call Signal Frequency ............................................................................................................................ 20kHz, crystal controlled
Talk-off Frequency ................................................................................................................................. 24kHz, crystal controlled
Microphone Preamplifier
Maximum Voltage Gain ......................................................................................................................................................... 54dB
Frequency Response............................................................................................................................... 100Hz to 8,000Hz, ±3dB
Input Impedance..................................................................................................................................................................1,000
Ω
Limiter Range......................................................................................................................................................................... 30dB
Headphone Amplifier
Maximum Voltage Gain ......................................................................................................................................................... 30dB
Frequency Response............................................................................................................................... 100Hz to 8,000Hz, ±3dB
Headphone Impedance ................................................................................................................................................. 50 to 600
Ω
Output Power...................................................................................................................................................... 150mW into 50
Ω
Output Voltage Level............................................................................................................................................................ 8Vp-p
Speaker Amplifier
Maximum Voltage Gain ......................................................................................................................................................... 30dB
Frequency Response............................................................................................................................... 100Hz to 8,000Hz, ±3dB
Speaker Impedance .......................................................................................................................................................... 8 to 16
Ω
Output Power per Amplifier.........................................................................................................................................5W into 8
Ω
Output Voltage Level.......................................................................................................................................................... 16Vp-p
Power and Mechanical
Power Requirements ............................................................................................................115 or 230VAC, 20VA max 60/50Hz
18 to 25VDC, 100 to 125mA quiescent, 900mA max
Dimensions............................................................................................... 1.72” H x 8.2” W x 8” D (44mm x 208mm x 203mm)
Weight .................................................................................................................................................................. 4.25lbs (1.93kg)
Material/Finish ............................................................................... Thermo-plastic front panel, aluminum case, light gray finish
Connectors
Intercom Line Connector .........................................................................XLR type, 3-pin (male-female loop through on 2-wire
CH 1 and 2, or 4-wire CH A; Female only on
2-wire CH 3 and 4, or 4-wire CH B
Dynamic Mic............................................................................................................................................ XLR type, 6-pin female
5-pin/4-pin female XLR
Carbon Mic........................................................................................................................................ ¼-inch phone jack, 3-circuit
Auxiliary Connector....................................................................................................................................25-pin, female, D-Sub
Program Inputs .................................................................................................................................. ¼-inch phone jack, 3-circuit
Speaker Output.................................................................................................................................. ¼-inch phone jack, 3-circuit
Panel Mic.....................................................................................................................¼-inch phone jack, metal busing, 3-circuit
