User's Manual

Table Of Contents
WIR ING DI A GRAMS
48 Electrical connections for upmast and downmast transceiver systems are detailed on the
wiring diagram (Figure 10). For full details of connections to the display system refer to
your system manual (KH2020, KH2026 and KH2061), as appropriate.
49 The inverter in the Drive Control Unit must be set to produce either low speed or high
speed antenna rotation to meet the operational requirements of the system. To set the
inverter to produce low speed or high speed antenna rotation, at the Drive Control Unit, Drive
Control PCB (GTX-A104) PLA, make the following connections:
Low speed (22 RPM) Link PLA pins 2 and 4 only
High speed (44 RPM): Link PLA pins 2 and 4 and
PLA pins 3 and 4
CHECKS AFTER FITTING
50 The upmast transceiver must be checked for security and freedom to rotate.
51 Ensure that all cables are secured to their associated entry point and that screened cables
are earthed to their respective units.
52 All cable entries must be checked for signs of fretting, chafing or damage, and
subsequently sealed with a mastic compound.
53 Commissioning instructions are provided in Chapter 5.
KH1264
Chap ter 4
Page 4.22 Is sue 2