RFL Electronics GARD 8000 - Table 10-20. Line Board, Setup Ju Mpers and Switch Sett Ings

Power Line Carrier
GARD 8000 SYS RFL Electronics
April 23, 2015 10-43 973.334.3100
Table 10-20. Line Board, Setup Jumpers and Switch Settings
Reference
Designation
Component
Function
J10
Jumper
Used to set Rx Impedance of 4W systems.
Can be set to 50, 75, 100 or 130 Ohms.
J20
Jumper
Used to set Tx Impedance of 4W systems or the Tx & Rx Impedance of
2W systems. Can be set to 50, 75, 100 or 130 Ohms.
J1-J9
Jumper
Adjusts capacitive component of line impedance.
Refer to the Hybrid Tuning procedure. (4.6.3.2)
J13-J15,
J17-19, J21
and J22
Jumper
Adjusts inductive component of line impedance
Refer to the Hybrid Tuning procedure. (4.6.3.2)
R1
Potentiometer
Adjusts resistive component of line impedance.
Refer to the Hybrid Tuning procedure. (4.6.3.2)
S1
Switch
A 6-position rotary switch, which allows the selection of various resistors
to adjust the resistive component of the line impedance.
Refer to the Hybrid Tuning procedure. (4.6.3.2)
J28
Jumper
Install this jumper in the TOP position if the attenuator module is not
equipped. Install it in the BOTTOM position if the attenuator module is
equipped.
J25
Jumper
Selects 4W mode or Loopback mode.
J11, J12 and
J23
Jumper
All three of these jumpers must be set to 2W to select 2W mode.
All three of these jumpers must be set to 4W to select 4W mode.
R10
Potentiometer
Adjusts the Rx Output level.
TP1
Test point
Connect the low or common side of test equipment to this test point when
monitoring TP2 or TP3.
TP2
Test point
Tx monitor high, test point.
TP3
Test point
Rx monitor high, test point.
J16
Jumper
Used for factory testing. In normal operation this jumper is not installed.