Getting Started
OTS9100 User Manual 1-9
Slot Positioning of OTS Cards
The slot in which each card is installed is very important to the proper operation of the
instrument. Because of the user interface configurations, certain cards must be in specific slot
positions in order to take advantage of features to operate correctly.
The OTS9100 module consists of a grouping of four cards. For every OTS9100 module group,
the Optics card must be in the leftmost card or slot 1 (Does not apply to a multi-channel system).
The Optics card must be followed by the Receive card in the second position, the Transmit card
must be in the third position and the Clock Trigger card must always be in the right-most position
or fourth position within the four card module grouping.

Multiple Modules

A module group may span the CPU in a multi-module system if necessary. The sequence of
cards should continue from one side of the CPU slot(s) onto the other side. The CPU card(s) may
interrupt the sequence physically but does not end the module group. Slot positioning with the
CPU interrupting a sequence of cards will not affect the functionality of the OTS cards on either
side of the CPU slot position(s). Empty slots, or slots containing non-Tektronix cards; effectively
‘end’ the module group.
When an OTS9100 10 Gb/s module and an OTS9200 Jitter module are loaded within the same
chassis the slot positioning must start with the OTS9100 optical card positioned in the first
position with the rest of the OTS9100 module loading sequentially as described above, the
OTS9200 module must be adjacent to the OTS9100.
Through Mode operation is only supported when the module has been loaded into slots 1-4 of the
chassis and only when the modules are installed in the following order:
• Optics card is in slot 1
• Receive card is in slot 2
• Transmit card is in slot 3
• Clock Trigger card is in slot 4
If cards are not installed in this order, “through mode” is not allowed as a Tx Signal Source.
NOTE: If the slot positioning rules are not followed, the module functions will be invalid. The
transmitter and receiver functionality depends upon the absolute slot position and relative order
of the cards.