Cisco Cisco Explorer Set-top Software Version 2.1 ユーザーガイド
Chapter 2 Network Status Diagnostic Screens for all Explorer DHCTs
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Field Name
Description
Possible Values
RDC
The information about the reverse
data channel (RDC)
data channel (RDC)
Frequency—Dependent upon the
setting to which RDC transmitter
is broadcasting (MHz)
setting to which RDC transmitter
is broadcasting (MHz)
Signal Level of Transmitter
• Acceptable Range
• Acceptable Range
:
+25 – +55 dBmV
• Recommended Range:
+27 – +53 dBmV
Round Trip Delay—delay
between the DHCT and
quadrature phase shift keying
(QPSK) modem at the headend
or hub (µsec)
between the DHCT and
quadrature phase shift keying
(QPSK) modem at the headend
or hub (µsec)
Clocks
Field
Name
Description
Possible Values
Booted
The date and time that the Explorer
DHCT last booted
DHCT last booted
Note: The hexadecimal format for
the date and time is shown in
parenthesis.
the date and time is shown in
parenthesis.
[Date, Time]
Current
The current date and time
Note: The hexadecimal format for
the date and time is shown in
parenthesis.
the date and time is shown in
parenthesis.
[Date, Time]
Additional Feature: Displaying the Memory Heap Map
CAUTION:
Accessing the Memory Heap Map may adversely affect performance. Do not
Accessing the Memory Heap Map may adversely affect performance. Do not
attempt to access the memory Heap Map diagnostic screen unless requested to
do so by Cisco Services personnel or a support team member.
If you have Explorer DHCTs running SARA 1.44 or later, one of our engineers or
support team members may ask you to press the
support team members may ask you to press the
button on the remote control
while viewing this diagnostic screen. Pressing this button displays a new Memory
Heap Map diagnostic screen.
2
A setting greater than +55 dBmV may indicate a problem. If the dBmV falls outside of the
specified ranges, perform an analysis using a spectrum analyzer on the incoming signal.