TELECOMMUNICATIONS TECHNIQUES CORPORATION
27
Table 4-1
FIREBERD 4000 Synchronous Test Set-Up With EIA-530 (Continued)
Step
Activity
4.
Using the SETUP SELECT switch and the softkeys underneath the SETUP display, configure the INTERFACE
SETUP menu as follows:
NOTE:
Unless indicated, press the right half of the SETUP SELECT switch once between selections.
Select:
1.
MIL449 to select the RS-449/530/MIL Interface.
2.
EIA530 to select the type of interface.
3.
DTE to select DTE emulation.
4.
BAL to select balanced mode.
5.
IMPEDANCE as required (78, 100, 124, or UNTERM).
6.
SYNC to select synchronous timing.
7.
Select LL (Local Loop) or RL (Remote Loop) ON or OFF depending on the test.
8.
ON to select Signaling positive.
5.
Set the SETUP CATEGORY switch from INTERFACE SETUP category to the GENERATOR CLOCK
category.
6.
Set the GENERATOR CLOCK to INTF to receive the clock from the DCE.
7.
Set the SETUP CATEGORY switch from GENERATOR CLOCK category to the PATTERN category.
8.
Using the MORE key and the appropriate softkey, select a test data pattern.
NOTE:
If transmitting test data to either the local modem or the remote modem as shown in Figure 4-1, select
either the 511, or the 2047 data pattern.
NOTE:
If testing a 64 kb/s subrate channel as shown in Figure 4-2, it is recommended to select 2047 or 2
15
-1
data pattern.
9.
If hard copy test results are desired, set the PRINTER switch to print on a time interval (15 MIN or 1 HR) or on
the occurrence of any error condition (ERROR).
NOTE:
Both error and time print events can be customized using the AUX PRINT EVENT auxiliary function.
See Section 3 of the FIREBERD 4000 Reference Manual for detailed instructions.
10.
Press the RTS and DTR switches (located to the right of the VOLUME control) to set both signaling leads HIGH.
Both switches will illuminated.
11.
Using the appropriate cables, connect the FIREBERD 4000 to the equipment under test.
12.
If performing a loopback test, establish a loop by performing the procedures which are appropriate for your DCE.
13.
Check that the PATTERN SYNC and CLOCK PRES LEDs located at the upper right-hand corner of the
FIREBERD 4000 are illuminated.
RESULT:
The FIREBERD 4000 has achieved pattern synchronization, and is gathering test results.