Ametek CH44-VER08 System Manual page 31

RF Hybrids System Manual
8.2 Customer Interface Points
8.2.1 Jumpers
• J M P 1 ( R X - O n l y t e r m i n a t i o n ) =
OUT (Normal for TX/RX or TX only
applications)
IN (50 Ω permanent termination for RX
only applications)
Shipped setting = OUT
JMP1 is set to the IN position for the application
where there are no transmitters, and there is a need
to provide a 50 Ω termination for high-Z receivers.
If transmitters are connected, it is put in the OUT
(normal) position.
• JMP2 = Switch SW1 Enable or Disable
Shipped setting = SW1 Enabled
JMP2 is used to enable or disable the front
momentary pushbutton switch SW1. For customers
not desiring this switch, it gives them a way of
jumpering it out of the circuit.
• JMP3A/B (TEST LED) = Normal or Bright
Shipped setting = Normal
Allows for setting the green TEST LED to be
brighter. It should be set to the Normal position
with 20W of power coming into its input, but can be
set for the Bright position for 10W or lower as
desired by the user.
• JMP4A/B (IN-SERVICE LED) = Normal or
Bright
Shipped setting = Normal
Allows for setting the red IN-SERVICE LED to be
brighter. It should be set to the Normal position
with 20W of power coming into its input, but can be
set for the Bright position for 10W or lower as
desired by the user.
• J M P 5 A / B ( L E D C o l o r S e l e c t ) =
-001 part # suffix for (green = Test, red = In-
Service)
-002 part # suffix for (red = Test, green = In-
Service)
Page 8–2
Shipped setting = depends on which part number is
ordered.
An option for customers who want to swap the
function of the colors, but it also requires ordering
a special -002 board with special front label.
8.2.2 Test Points (Black)
• Input – For IN1 & IN2 Coax connector
• Common – This is the common for all the test
points
• Output – This is the Test Point before the in-
line pushbutton switch
• Line – This is the Test Point after the in-line
pushbutton switch. Electrically tied to the
Output Test Point unless the pushbutton
switch is pressed
8.2.3 Switches
NOTE: The small pushbutton switch is recessed to
prevent accidental activation. Use a narrow tool
such as a pocket screwdriver to press it.
SW1 – This is a normally closed front panel push-
button switch that allows for an in-line reflected
power meter to be inserted between the Output and
Line test points when pressing this switch.
When using this switch, the in-line meter is always
inserted into the test points first, and then the push-
button is pressed for the measurement and released
before removing the meter.
This prevents loss of the carrier signal when
inserting the meter, therefore, there is no need to
take the system out of service when properly using
this switch.
SW2 (Safety Test Switch) -
A front panel latching safety test switch replaces the
panel carrier grounding knife switch, providing not
only safety in the test mode but allowing perform-
ance testing.
When pressed in, the safety test switch turns orange
and opens the coax path while simultaneously
terminating either side of the opening with an
April 2023