ADTRAN 1202076L2 - Manual (Page 37)

Chapter 2. Installation
61202076L1-1 TSU 600 User Manual 2-11
You can use NxDBU modules in any slot.
Power-up Testing
When shipped from the factory, the TSU 600 is set to factory default con-
ditions. At the first application of power, the unit automatically exe-
cutes a memory self-test. A full self-test can be run from the front panel,
and a passcode and unit ID may be set using the UTIL menu.
Self-Test
Upon a power-up, the LCD displays Memory Test Now Testing and the
Test LEDs are illuminated.
Slots 3-5 Slots 3-5 will accept any interface type except second-
ary interface, the interface for DTE timing, or the mul-
tiport DBU. If other interfaces have any restriction on
their location, this will be specified in the individual
option card manual (provided with the option cards).
Slot 6 Slot 6 services any option module type including sec-
ondary network interface ports (DSX-1 (PBX) and Full
D&I), but not the DTE timing source. If a secondary
network interface port is to be used, it must be
installed in slot 6.
When . . . Then . . .
the self-test is complete
with no failures detected the OK LED lights up and the LCD
momentarily displays All Tests
Passed .
a failure is detected a list of failures is displayed in the
LCD window