Timing source
Follows
This screen allows you to make the physical setup of the PDH transmitter in
E4 mode. It can also be used to inspect the current status of the selected
port.
The configuration options available in the setup area of the screen are
described below. The status information is described in a separate section.
Select the clock source.
Internal: Internal clock of the module
External: The clock provided from the Ext Clock connector
Received: The clock generated from the received signal
When External or Received is set, the right hand lamp indicates whether
clock is detected or not.
5.7.1.2 E4 Signal Setup
Touching the navigation area button which represents the transmitter's E4
layer will display the same screen as E3 Signal Setup.
To make the Port 2 transmitter follow the Port 1 transmitter (i.e. copy its
settings) when using Port 1 and Port 2, touch the drop-down menu in the
navigation area and select the Tx1. The Port 2 settings continue to follow the
Port 1 transmitter change. The default setting is None. Note that the Port 1
transmitter cannot follow the Port 2 transmitter.
PCM frame
Use the PCM frame radio buttons to enable (On) or disable (Off) insertion of
PCM frame in the transmitted signal.
Pattern type
Select the pattern to be inserted in the transmitted signal. Refer to Pattern
type in "E1 Setup and Status". Available patterns are:
Off
User [32] bit, User [2048] bit
PRBS 9 to PRBS 31
QRSS 20
All 0's, All 1's
Alternating 1:1, Alternating 1:3, Alternating 1:7, Alternating 3:24
Touch 'Normal' or 'Inverse' pattern type.
Touching the 'ITU standard' button will apply ITU-T O.150 recommended
Pattern type for 140 Mbit data rates (PRBS 23 Inverse).
User pattern
User pattern field is enabled if Pattern type is set to User [32] bit or User
[2084] bit. Touch the User pattern field and use the launched Pattern
Editor dialog box to define the user pattern. Depending on the selected
pattern type, different user pattern setup options will be available.
The length can be any length from 1 bit to 32 bits or from 1 bit to 2048 bits.
5.7.2 Receiver Setup
5.7.2.1 Physical Setup
When the receiver is set up with only an E4 interface, selecting the Rx button
in the navigation area will launch the following screen.
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