User's Manual

Table Of Contents
ROAMEO System Introduction 17
Bosch Security Systems, Inc.
Technical Manual
F.01U.306.750
Rev. 01
TR-1800 Connections
XLR - 5-Pin Female
IMPORTANT: Most XLR headsets use dynamic-type
microphones that work well with radiated
RF energy. However, some XLR headsets
use Electret microphones that are
susceptible to RF energy and may generate
audio noise. Always test any Electret type
headsets with the product before using to
troubleshoot any issues.
3.5mm Auxiliary Jack
Accepts a 3.5mm TRS (Tip, Ring, Sleeve) stereo
connector or a mono TS (Tip, Sleeve)
NOTE: Audio can be input via the Tip, Ring 1 or
both.
Headset Mode
Accepts 3.5mm iPhone-like TRRS (Tip, Ring 1, Ring 2,
Sleeve) connector
FIGURE 2. XLR – 5-pin Female Connection
Pin Description
1Ground
2 Microphone
3 Headphone +
4 Headphone -
5 Headphone - (tied to pin 4)
FIGURE 3. 3.5 mm Tip, Ring, Sleeve diagram
Description
Tip Audio Input
Ring 1 Audio Input
Ring 2 Ground
Sleeve Not Connected
Description
Tip Headphone -
Ring 1 Headphone +
Ring 2 Ground
Sleeve Microphone (+5VDC bias supplied)