Specifications

117

Level Setting Procedures

You may be able to install all of your units with the default settings they arrived with from

the factory, and the system may perform very satisfactorily. However, it is likely that at

least one or two stations will need to have their levels adjusted to provide optimum output.

This section of the manual deals with adjusting the audio levels in individual Station

Transponder Units and at the VoIP Server (if the VoIP option is used to distribute voice

traffic through the system).

If your system uses a radio-based infrastructure to distribute voice audio through the

system, there is a separate set of instructions to cover adjusting levels in the Station

Transponder Unit to match the radio to which it is interfaced.

It is recommended that you read through this section at least once prior to actually trying

to make adjustments. The procedures are not that difficult; however, the whole process

will go more smoothly if you know what to expect and have arranged to have everything

you need on hand before you start.

Equipment & Prerequisites

• A small, flat-bladed screwdriver suitable for adjusting the potentiometers on the

transponder board of the Station Transponder Unit

• An oscilloscope, actually you may want two of them, one at the server location and

one at the Station Transponder Unit location

• For setting levels in a radio-based system, a service monitor is required to check

channel deviation levels

• A land line, cell phone, or radio link so instructions can be passed between the

dispatch center equipment room and the station at which the Model 6203 is located

• The necessary hardware to create adapters that will enable you to make oscilloscope

readings at the Mic In (pink) and Speaker Out (green, Line Out on some cards)

jacks on the sound card of the VoIP server computer

Note While the Station Transponder Unit will provide clear audio at its

location, it was never intended to provide a high level audio output.

It is assumed that the signal from the Station Transponder Unit will

be sent to a PA amplifier and that the PA amplifier will drive the

speakers in the fire station.