Intercom Performance; Control Inputs; Antenna Requirements; Serial Interface - II Morrow Inc. Apollo SL40 Installation Manual

Microphone input ..................................... Two inputs, standard carbon or dynamic mic with
Modulation capability............................... 85% with 100mv to 1000mv rms microphone input
Audio frequency distortion ....................... < 10% at 85% modulation at 350 to 2500 Hz
Audio frequency response ........................ < 4db variation with 350 to 2500 Hz, 85%
Carrier noise level..................................... > 35 dB down
Sidetone output ......................................... up to 280mW into 100Ω, 120mW into 500Ω
Duty cycle ................................................. 100%
Stuck mic time-out.................................... 35 second time-out, reverts to receive
I P
NTERCOM ERFORMANCE
Microphone input ..................................... Two inputs, standard carbon or dynamic mic with
Headphone audio output level .................. 280 mW into 100Ω, 120 mW into 500Ω
AGC characteristic.................................... output varies < 3 dB with input of 100mv rms to
C I
ONTROL NPUTS
Transmit key ............................................. Input pulled low to ground to enable the transmitter
Intercom select.......................................... Input pulled low to ground to enable the intercom
A R
NTENNA EQUIREMENTS
The Apollo SL40 requires an antenna meeting the following specifications.
Standard 50Ω vertically polarized antenna with a VSWR < 2.5:1.
S I
ERIAL NTERFACE
RS-232 ...................................................... Defined in Appendix E - Serial Interface
R C
EAR ONNECTOR
Apollo SL40 Installation Manual
integrated preamp providing minimum 70mv rms
into 1000Ω load
at 1000 Hz
modulation
integrated preamp providing minimum 70mv rms
into 1000Ω load
1000mv rms
function
Specifications
P
INOUT
Specifications
17