User Manual
CXE85X
59300464
Rev.005
9.12.2013
9(44)
Features
Local user interface
The local user interface consists of two/three status LEDs for optical input
power and general status, a reset button, a rotary switch for midstage gain
setting, three jumpers for setting the output slope, gain adjustment range and
controlling the OLC and one jumper controlling the DC voltage connection at the
RF output port.
LEDs
The optical input power LED is red when the optical input power has a major
alarm (i.e. is outside major alarm limits), yellow when it has a minor alarm (i.e.
between major alarm limits but outside minor alarm limits), otherwise green.
The status LED is red when there is at least one major alarm related to RF
output power, temperature, local power supply or internal error. It is yellow
when there are no major alarms but at least one minor alarm. Otherwise it is
green.
The status LED blinks when the RF controls are under software control and
changing the rotary switch or jumpers has no effect. Hardware control can be
restored using the reset button.
Reset button
The reset button can be used to restore RF controls to hardware control, to
reset communication settings back to factory values or to reset all settings back
to factory values.
Button pressed Status LED
Action when released
<1 s
dark
-
1...5 s
green
RF controls return to hardware control
5...10 s
yellow
Communication settings are reset
10...15 s
red
All settings are reset to factory values
>15 s
dark
-
Table 1. Reset button functions
When the button is released while the status led is green/yellow/red, the status
LED blinks briefly in the same colour to indicate successful operation.
The communication settings reset enables DHCP and sets SNMP communities
to read:public and write:private. This can be used to e.g. restore communication
with a device whose IP address is unknown.
RF controls
The rotary switch can be used to attenuate output level in 1 dB steps between
0...15 dB. 2nd generation devices feature two attenuation ranges (0…15 dB or
16…31 dB) to adjust the output level. The attenuator ranges are selected using
the attenuator range selection jumper.
OLC can be disabled with a jumper for high output level applications. When
disabled, the input attenuator is set equivalent to -4 dBm input power.
Output slope can be selected between flat, middle or high with a jumper. The
middle option is available only with 2
nd
generation devices.