Hubbell GARD Pro, Instruction Manual

Page: 314 / 345

Troubleshooting ______________________________________________________________________
RF-MCGARDPRO Hubbell Power Systems, Inc. – RFL™ Products
July 1, 2022 ©2022 Hubbell Incorporated
8-12
Reference
Designation
Description Function
J26 Rx connector BNC Connector
J27 2-pin Header Selects 75 Ohm termination with J27 installed and J28 uninstalled.
Max power dissipation is 1 Watts.
Do not install with J24 in
CONNECT(ON/OFF) position.
J28 2-pin Header Selects 50 Ohm termination with J28 installed and J27 uninstalled.
Max power dissipation is 2 Watt.
Do not install with J24 in
CONNECT(ON/OFF) position.
J30 3-pin Header
Selects internal or external power supply via TB1 pins 1, 2 and 3 on
PLC Analog Module rear panel.
Set J30 and J31 to INT to select internal power supply.
Set J30 and J31 to EXT to select external power supply.
J31 3-pin Header
J32 2-pin Header
Selects one of three modes of CLI (Carrier Level Indicator) output
driver. Connect external meter to TB1 pins 4 and 6 on PLC Analog
Module rear panel.
Selects 0-5V with J32 installed and J33 and J34 uninstalled.
Selects 0-100uA with J33 installed and J32 and J34 uninstalled.
Selects 0-1mA with J34 installed and J32 and J33 uninstalled.
J33 2-pin Header
J34 2-pin Header
J35 3-pin Header
Selects Normal operation or Test operation.
Set J35 and J36 to NOR for Normal operation.
Set J35 and J36 to TEST for Test operation.
J36 3-pin Header
J38 3-pin Header Used to set TX Filter frequency (new board only). See Section 6.4
J39 3-pin Header Used to set TX Filter frequency (new board only). See Section 6.4
J40 3-pin Header Used to set TX Filter frequency (new board only). See Section 6.4
L4 Inductor Used for fine adjustment of inductive component of balance network .
See Section 6.3.5
R2 Potentiometer Used for reflected power meter calibration.
R5 Potentiometer Used for reflected power meter calibration.
S1 6-position
Rotary Switch Used for coarse adjustment of resistive component of balance
network.
See Section 6.3.5 for hybrid tuning procedure.
R46 Potentiometer Used for fine adjustment of resistive component of balance network.
See Section 6.3.5 for hybrid tuning procedure.
TP1 Test Point Power Amp Input
TP2 Test Point Power Amp Output (U1 pin 1)
TP3 Test Point Power Amp Fail
TP4 Test Point Ground
TP5 Test Point Ground
TP6 Test Point Ground
TP7 Test Point Power Amp Output To TX Filter
TP8 Test Point Input to Tx Filter
TP9 Test Point Positive Power Supply Rail (For factory use only)
TP10 Test Point Negative Power Supply Rail (For factory use only)
TP11 Test Point
In 4-wire operation, monitors TX output to the line.
In 2-wire operation, monitors Input to the Skewed Hybrid.