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| datatrak:receivers [2020/06/01 02:39] – [Mk.II series (including Mk.IId)] philpem | datatrak:receivers [2022/01/22 12:09] – [Power supply section] philpem | ||
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| - | ===== Mk.II series (including Mk.IId) ===== | + | ===== Mk.II series (including Mk.IId |
| {{: | {{: | ||
| Typically seen in black, but were also available in silver. | Typically seen in black, but were also available in silver. | ||
| + | |||
| + | TrakBak units have a blank ROM-bay cover in place of the one with the " | ||
| ==== Physical construction ==== | ==== Physical construction ==== | ||
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| Four screws secure the front panel, with the same on the rear. There are two PCBs internal to the unit -- a UHF power amplifier on the top of the metal shield plate, and the processor and LF receiver on the base board. | Four screws secure the front panel, with the same on the rear. There are two PCBs internal to the unit -- a UHF power amplifier on the top of the metal shield plate, and the processor and LF receiver on the base board. | ||
| + | |||
| + | The UHF PA may not be present in some units. These units will typically be navigation-only and have no Radio EPROM. | ||
| ==== Power supply section ==== | ==== Power supply section ==== | ||
| The Mk.II accepts power through a 3-pin XLR connector. This carries the 13.8V vehicle DC supply voltage, ground and an ignition sense wire. Turning on the ignition powers on the receiver. Normally a loss of ignition sense will cause the receiver to shut down. | The Mk.II accepts power through a 3-pin XLR connector. This carries the 13.8V vehicle DC supply voltage, ground and an ignition sense wire. Turning on the ignition powers on the receiver. Normally a loss of ignition sense will cause the receiver to shut down. | ||
| + | The XLR pinout is on [[datatrak: | ||
| ==== LF receiver section ==== | ==== LF receiver section ==== | ||