2. Connect black wire to ground.
3. Connect white wire to audio input of transmitter.
4. Find the transmitter key line. This line is pulled to ground by the IDer during identification by saturating the open collector of an NPN transistor. The board has the capability of sinking 100mA and will accept up to 30 volts when unkeyed. If this line drives a relay, be sure it includes a diode clamp to prevent a high voltage transient which could destroy Q1.
5. The ID cycle can be started manually by shorting the pads marked "5" and "R" on the board. Use R5 to set the audio level. Commercial ID requires 30% to 50% modulation. If the audio cannot be adjusted low enough without difficulty, add a 470K resistor in series with the white wire.
6. Attach board to convenient spot inside your equipment. The cooler the location, the better the reliability even though the IDer is designed for any temperature which is likely to exist in your equipment. In peeling the green backing, it will make eventual removal easier if only 1/4 inch of tape is exposed on each side.
AUDIO FREQUENCY is controlled by R2.
CODE SPEED is controlled by R1.
CALL SIGN: Your identifier has a socket for the memory element. The memory element can be ordered from us for $10.00 and replaced in the field.
MANUAL CONTROL of the ID can be had by a switch across C5. ID will begin each time the switch is opened and will immediately cease each time it is closed. If automatic TX keying is used (green wire), transmitter will be keyed while switch is closed.
TX KEYING: To connect for CW keying of transmitter, move R6 from U3 pin 10 to U3 pin 9.
CNS-1: When power is applied to the IDer, the unit will immediately key the transmitter and after about 250mS will identify once. Subsequently, the IDer may be keyed either by interrupting power or by applying a 5 volt pulse to the terminal marked "R". For manual checkout, this can be accomplished by momentarily shorting the terminals marked "5" and "R" together.
CNS-2: ID will occur every 15 seconds as long as power is applied to IDer
Positive keying requires an external interface circuit if the green wire is used because the identifiers are designed for ground keying such as used by most equipment manufacturers. Figure 1 shows the schematic for the circuit required.
The CNS-1 identifies once every time it is triggered. The CNS-2 repeats every 15 seconds as long as power is applied.
-1 to -2: Identify the jumper between the pad marked Q and the pad immediately adjacent. Cut this jumper. Add a jumper between the "Q" pad and the "G" pad which is connected to ground.
-2 to -1: Reverse the above process by cutting the jumper between "Q" and "G", and installing a jumper between the "Q" pad and its neighbor.
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