Section 2: General operation
Models 707B and 708B Switching Matrix Reference Manual
2-14
707B-901-01 Rev. B / January 2015
Crosspoint display (Model 707B only)
The crosspoint display on the front panel of the Model 707B displays information about the slots that
contain cards and the open and closed state of the channels for one card slot at a time. If there are
no cards in the instrument's slots, the crosspoint display shows "No card in unit."
Figure 16: Model 707B crosspoint display
The crosspoint display has a list of slots on the right. To the left of the slot list are lights that show you
an overview of the cards in the instrument's slots.
Figure 17: Model 707B slot indicators
The red lights indicate closed channels. If a red light is on, a channel in that slot is closed. If the red
light is not lit for a slot, all channels in that slot are open. In the figure above, the card in slot 2 has at
least one closed channel.
The yellow lights indicate which slots contain a card and which slot is presently displayed on the
crosspoint display. When a yellow light is on, the slot contains a card. When a yellow light is off, the
slot does not contain a card. If the yellow light is brighter than the others, that slot is being displayed
on the crosspoint display. In the figure above, there are cards in five slots, no card in slot 5, and the
channels for the card in slot 3 are displayed on the crosspoint display.
