This function allows the analyzer to enable/disable CRC-4 error detection algorithm. Select one of the following
values:
On
: If the function on the test set is able to measure CRC-4 errors in the received signal, and to send CRC-4 bits
in transmitted signal.
Off
:
CRC-4 processing function is disabled.
Inv
: Invert CRC-4 bits.
Line code
Select the coding type between AMI and HDB3.
Transmitter synchronization
“Send sync” field allows the user to set the following parameters:
Rx
: Synchronization from the Rx clock.
Intr
: Synchronization from the internal clock.
Sync
: Synchronization from E1 Sync clock.
Long haul
To turn On/Off the “Long haul” mode.
The “Long haul” mode is able to receive a signal level up to -36 dB.
If the mode is switched off then minimum level of received signal level is up to -18 dB.
Deviation
If the transmitter synchronization is set to “Intr” the value of the Deviation field provides the ability to switch on/off
deviation of the internal clock frequency. To specify deviation frequency use the function keys to adjust the value.
Test speed
This field allows the user to define the measured object (E1 path or a set of timeslots) for both receiver’s and
transmitter's ports. Move the cursor to the field's line and press ‘Enter’. A Select timeslots submenu (see
Figure
5.3
) will appear on the screen.
To define measured object proceed as follows:
Figure 5.3:
“Select timeslots” submenu
Page 14 of 30
TX50e e-Manual D07-00-009 REVA00
