Telex Audiocom ES4000A, Инструкция пользователя

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Connection Notes
Connection Notes
• Typical connections for the US2000A, ES4000A and various power supplies are shown starting with Figure 6. Select the
configuration which most closely matches your intended usage.
• The US2000A and ES4000A normally draw operating power from the intercom channel power supplies (SPS2000A,
PS2000L, etc.). Alternatively, you can use option PS-L Wall-pack Power Supplies. If you are using PS-L Wall-packs,
connect them to the 12-15 VDC jacks on the back panels of the US2000A and ES4000A. When PS-L Wall-packs are used,
the US2000A / ES4000A will not draw power from the intercom channel power supplies, leaving more power for belt
packs.
IMPORTANT : The PS-L power supply only provides power for the station that it is connected to. You cannot use the PS-L to
power the intercom channels!
• Never connect more than 1 SPS2000A, PS2000L, or PS4000 Power Supply to the same intercom channel. This will cause
poor audio quality and increased noise. Typically, all power supplies are located at a central location, such as a central
master station. This lets the central master station operator turn off the intercom system when it is not being used.
• Termination Plugs: The ES4000A is supplied with 2 termination plugs for special applications where 1 or more channels
are unpowered. Figure 12 on page 18 and Figure 13 on page 19 show example of how to use these plugs. If all of your
incoming channels will be powered from an SPS2000A, PS2000L, or PS4000 power supply, the termination plugs are not
needed.