Argent OpenTracker, User Manual

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3. Connector Pin Assignments
Table 2 – Pin Header 1 (JP1)
Pin Designator Notes
JP1 PTT Input or Relay Out See note #1
JP2 Ground
JP3 Jumper Usually used to switch configurations
JP4 IRQ See Note #2
JP5 ADC0 On ‐ board temperature sensor
JP6 ADC1 On ‐ board divider provides 1/3 V
in
JP7 ADC2 Extra ADC input or 1 ‐ wire data bus
JP8 V
in
6.7 to 35 VDC
JP9 V
ext
(see Note #3)
JP10 +5 Volts DC Output of regulator U2
Note #1 – JP1 can be used for either PTT input for mic encoder operation, or as a relay control
output if power control is enabled. When used as a relay output, the pin can provide no more
than 15 ma current.
Note #2 – JP4 pulled momentarily to ground will force an immediate transmit.
Note #3 – If JP8 and JP9 are jumpered together, pin 4 on connecter X2 (Serial Port) can be used
to supply raw voltage (Vin) to an external device such as a GPS receiver, or to receive power via
a specially wired cable assembly. JP9 and JP10 may be connected to provide regulated 5 volt
power on pin 4.
Table 3 – DB9 Female (X1) – Radio Port Table 4 – DB9 Male (X2) – Serial Port
Pin Function
1 No Connection
2 Data In
3 Data Out
4 V
ext
5 Ground
6 No Connection
7 No Connection
8 No Connection
9 No Connection
Pin Function
1 Audio Out
2 COR / Squelch Input
3 PTT
4 No Connection
5 Audio In
6 Ground
7 Power in
8 PTT Input
9 No Connection
X2 is wired as DTE to allow connection to a GPS receiver using a standard cable. A null modem
cable is required for connection to a computer.
By default, the OpenTracker expects GPS data to be in NMEA ‐ 0183 format at 4800 baud.
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