Output implies that the data comes from the radio, and Input implies that the data.Ive found a PC style jumper on the two pins (as shown in the above photo - and.
Connector body: 571-1044221 (1.41 singles, 1.27 each in quantity ten, in April 2006) Contacts (pack of ten): 571-1873093 (about 1.25 in April 2006). This pin can also be an output when the radios microphone is. Frequency response: 1-3 dB referenced to a 6 dB per octave pre-emphasis characteristic. J8-11. This pin may serve as an input where a ground applied to this pin keys the radio. The pin has a 10 K ohm resistor pull-down to ground on the logic board. This pin has a 4.7 K ohm resistor pull-up to 5 Volts on the logic board. One of the programming options for this pin is as a transmit PL Inhibit. As an output it is an open collector MMBT3904 surface mount transistor. As an input, a voltage between 3 and 16 volts is recognized as a logic. The input has a slow rise time constant of 1.0 msec. One option on this pin is programming as an ANDed COS and PL decode signal. This input is normally used for the EMERGENCY SWITCH (input) and is. The standard 16 pin accessory jumper plug has this pin jumpered to ground. It has the same function as J3-5 on the five pin logic board. Alternately this pin can be jumpered to the SCI circuitry (labeled B) and connects. Communications Interface (SCI) is a bi-directional interface that is normally used. In SP applications, the jumper could be removed, and the center pin of the jumper block. The display also contains useful information on the characteristics of each function.
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