
Set Up Your System 3
Agilent E6474A User’s Guide 41
Figure 19 External GPS - Placer 455
Example 3 - Placer 455 with differential GPS
Refer to Figure 20 on page 42.
1 Connect the RTCM port of the Trimble- supplied
communications cable to the differential GPS receiver,
using the RS- 232 null modem cable included with the
system. Connect the remaining port of the
Trimble- supplied communications cable to the MDT/RTCM
port of the Trimble Placer GPS 455 unit.
2 Connect the digital port of the adapter box to the Digital
IO port of the Trimble Placer GPS 455 unit, using the
RS- 232 cable.
3 Connect the MDT/RTCM port of the adapter box to the
MDT port of the Trimble- supplied communications “T”
cable, connected to the Differential, using the RS- 232
cable.
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