Electro-Voice APD4+ User Manual
TELEX COMMUNICATIONS, INC. 12000 Portland Ave. South, Burnsville, MN 55337
R
In struc tion Sheet
Gen eral De scrip tion
The APD4+ Am pli fied An tenna Split ter makes it
pos si ble to op er ate four UHF wire less di ver sity
mi cro phone re ceiv ers on four sep a rate fre quen cies us ing only two an ten nas.
SPEC I FI CA TIONS
APD4+
CAT. NO. 301614000 600-780 MHz
CAT. NO. 301614011 780-900 MHz
AMPLIFIED UHF
ANTENNA SPLITTER
It also fea tures a high de gree of out put iso la tion;
a ne ces sity in multi-fre quency sys tems to pre vent
intermodulation.
The APD4+ Split ter is com pat i ble with Elec tro-Voice and Telex UHF di ver sity wire less re ceiv ers.
PN 804035
Fre quency Range 301614000.................................................................................600-780 MHz
301614011.................................................................................780-900 MHz
3rd Or der In ter cept Out put...........................................................................greater than 18 dbm
Net Gain ............................................................................................................greater than 2 dB
Noise Fig ure ...........................................................................................................less than 3 dB
Out put Iso la tion...............................................................................................greater than 20 dB
Con nec tors, An tenna..........................................................................Stan dard TNC re cep ta cles
Power Re quire ments ................................................................................ 100-240VAC 50/60Hz
Fea tures
The APD4+ is equipped with TNC type con nec tors. Low loss co ax ial ca bles are also sup plied
for split ter to re ceiver an tenna jack con nec tions.
The APD4+ has an in ter nal power sup ply. Power
out jacks and ca bles are pro vided to sup ply up
to four re ceiv ers thus elim i nat ing ex cess power
sup ply clut ter.
Rack panel mount ing “ears” al low the APD4+ to
be mounted in a stan dard 19 inch equip ment
rack. “Knock outs” in the ears al low front con nec tion of an tenna ca bles.
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Sys tem Con fig u ra tion
Fig ure 2 il lus trates the typ i cal sys tem con fig u ra
tion us ing the APD4+.
Fig ure 3 il lus trates an ar range ment where two
split ters have been cas caded. By con nect ing one
of the out puts of the first split ter to the an tenna
in puts of the sec ond split ter, three ad di tional re ceiv ers may be driven by a sin gle pair of an ten nas.
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SPE CIAL NOTE: In any sys tem, un used split
ter out puts should be ter mi nated with a 50 ohm
“dummy load”. See the ac ces so ries list ing at the
end of this man ual
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INPUT A
1 2 3 4
OUTPUT A
Front View
POWER OUT
1 2 3 4
15 VDC
1 2 3 4
OUTPUT B
APD4
Antenna/Power
Distribution System
INPUT B
+
RPOWER
90-260 VAC 50-60 Hz
POWER
Rear View
Fig ure 1
Front and Rear View
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INPUT A
OUTPUT A
1 2
3
4
RECEIVER 1
RECEIVER 2
RECEIVER 3
RECEIVER 4
1 2 3 4
Fig ure 2
Sys tem Con fig u ra tion
POWER OUT
15 VDC
1 2
OUTPUT B
90-260 VAC 50-60 Hz
3
INPUT B
4
POWER
ANTENNA
INPUT A
INPUT A
OUTPUT A
1 2 3 4
1 2
POWER OUT
15 VDC
1 2 3 4
3
4
TO RECEIVERS
ONLY
TO RECEIVERS
OR SPLITTERS
OUTPUT A
1 2 3 4
1 2
POWER OUT
15 VDC
1 2 3 4
3
4
TO RECEIVERS ONLY
(DO NOT FEED SPLITTERS FROM SECONDARY UNITS)
OUTPUT B
OUTPUT B
ANTENNA
90-260 VAC 50-60 Hz
INPUT B
POWER
90-260 VAC 50-60 Hz
INPUT B
POWER
Fig ure 3
Cas cading
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