RESEARCH CONCEPTS RC2000C Manual page 17

RC2000C Polar Tracking Antenna Controller
pickup which can result in antenna positioning errors. Please refer to figure 3.2 for reed sensor
connections and figure 3.3 for Hall Effect sensor connections.
NOTE: SHIELDED CABLES ARE REQUIRED FOR THE POSITION SENSORS. THE SHIELDS
MUST BE CONNECTED TO PINS J1-4 OR J1-6 ON THE BACK OF THE CONTROLLER AND MUST
NOT BE CONNECTED AT THE ANTENNA.
Position count errors due to improper use of the shield on the position sense lines is one of the most
frequent problems encountered during the installation of the RC2000C. Here are the problems that are
encountered:
1. A shielded cable was not used for the position sense wires.
2. The shield is not connected at connector J1 on the rear panel of the RC2000C.
3. The shield is connected to earth ground at the antenna. This results in ground currents flowing in the
shield. The shield must not be connected to anything at the antenna.
4. The insulator on the sensor cable is broken and the shield is grounded to something. As in #3, this
results in ground currents.
5. The sensor cable is spliced but the shield has not been spliced, or the shield is spliced but is also
shorted to earth ground.
See the Operation Troubleshooting Tips section of Chapter 7 for more information on count problems.
RT N RE F
S I G DRI V E
1 2 3 4 5
J 4
COMM
AGC2 AGC1
J 3
O G O
G
F A F
A
F F
I
I
1
S N S
N
E E
T T
AGC POT S
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas 66218-9680 • USA
RC2 000 Ba c k Pa n e l
J 1
P
A U
A
. 5
G R R L
G E A A
E
H
T
C C L T S 7
Z Z
L
V
N E J 2
1 2 + - + N V
-
SKEW
AUT OPOL I NPUT
SENSORS
AGC I NPUTS
Figure 3.1 RC2000C Back Panel Diagram
Chapter 3
DRI V E
BREAKER
E G E A A
G
L N L Z N Z
1 D 2 1 D 2
1
2
A
1
AZ DRI V E ( 2)
EL DRI V E ( 2)
Installation/Setup 11
EIC In p u t Po wer
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