2-8 FlexNet
®
700 Series Line Extender Rev F
2
Table 2.1 Testpoints, Plug-in Locations, Connections, and Parts
Item
Number
Label Function
1PORT 1 Allows access to the Port 1 centerseizure screw.
2 Port 1 Testpoint Forward signal input/return signal output testpoint 25dB below the signal
for 1GHz housings which have a
25dB label.
3 FORWARD PAD Plug-in location for a fixed attenuator accessory for fixed flat loss
adjustment of the forward signal.
4 FORWARD EQ Plug-in location for a fixed slope accessory for fixed slope adjustment of
forward RF signals. Use to compensate for cable preceding the line
extender.
5 INTERSTAGE EQ Plug-in location for a fixed slope accessory to set the slope of the line
extender output. Install the accessory specified on the System Map. Do
not use this position to compensate for cable preceding the line extender.
This accessory can be a signature correction device.
6 -25dB FORWARD
BALANCING T.P. or
FWD BALANCING T.P.
Internal testpoint for balancing the forward path. The testpoint level is
25dB below the signal.
7 Port 3 Testpoint Forward signal output/return signal input testpoint 25dB below the signal
for 1GHz housings which have a
25dB label.
8PORT 3 Access to the Port 3 centerseizure screw.
9 ALC SENSITIVITY Adjustment of the line extender output when the line extender is
operating in
ALC mode. This has no affect when the line extender is
switched to
MAN mode.
10 REVERSE EQ Plug-in location for a fixed slope accessory for fixed slope adjustment of
return RF signals.
11 REVERSE PAD Plug-in location for a fixed attenuator accessory for fixed flat loss
adjustment of return RF signals.
12 ALC/MAN Switch to enable or disable ALC. The MAN (manual) setting provides a
constant gain;
ALC causes the line extender to monitor a preselected
pilot carrier levels to maintain desired output levels.
13 MODULE HOLD
DOWN
Hold down screws that secure the RF module in the housing.
14 B+ T.P./
24V DC TP
Testpoint to measure the forward power supply regulated DC voltage.
This should be 22.8 to 25.2V
DC.
15 POWER PLUG Connection for H. E. Power Supply to the RF module.
16 MAIN FUSE
1
/
P/S FUSE
Line extender AC power overcurrent protection. The line extender will
not operate without this fuse installed.
17 THRU POWER FUSE
2
/
LINE FUSE
Overcurrent protection for AC power passed to the next amplifier. No AC
power passes through to the next amplifier without this fuse installed.
18 Power Supply Mounting
Screws
8-32x5/16 pan head screws (4) for securing the H.E. Switching Regulator
Power Supply in the housing lid.
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