Alternate Microphones And Installation - Stryker SR-497hpc User Manual

ALTERNATE MICROPHONES AND INSTALLATION

For best results, the user should select a low-impedance dynamic type microphone or
a transistorized microphone. Transistorized type microphones have low output
impedance characteristics. The microphones must be provided with a four-lead cable.
The audio conductor and its shielded lead comprise two of the leads. The third lead is
for transmit control and fourth is for receiving control.
The microphone should provide the functions shown in the schematic below.
If the microphone to be used is provided with pre-cut leads, they must be revised as
follows.
1. Cut leads so that they extend 7/16" beyond the plastic insulating jacket of the
microphone cable.
2. All leads should be cut to the same length. Strip the ends of each wire 1/8" and
tin the exposed wire.
4 WIRE MIC CABLE
Pin Number
1
2
3
4
Mic Cable Lead
Audio Shield
Audio Lead
Transmit Control
Receive Control
9