Teledyne Lecroy Summit Gen4 Test Platform, User Manual And Quick Start Manual, Page: 3 / 8

Section B
RefClk Out Connector (DUT PCIe Connector): Provides a copy of the clock currently supplied to the DUT slot: 100 MHz, 400mV.
RefClk In Connector (DUT PCIe Connector): Connects external reference clock source for the DUT. Clock is delivered to the DUT slot depending on
switch configuration (see
“Section D” on page iv
). To drive the 100 MHz, 500mV (Max) clock input the following sources can be used: CML, HCSL,
LVPECL and LVDS. You should feed only one of the differential pair signal to the input or they should convert the differential to single ended.
Analyzer [8-15][0-7]: Cables for Summit T416 Analyzer. Even though the cables are secured strongly exercise care when handling cables and avoid
excessive pulling or bending.
RefCLK Out Connector (Summit Z416 PCIe Connector): Provides a copy of the clock currently supplied to the Summit Z416 slot: 100 MHz, 400mV.
RefCLK In Connector (Summit Z416 PCIe Connector): Connects external reference clock source for the Summit Z416. Clock is delivered to the
Summit Z416 slot depending on switch configuration. See switch selection tables and diagram. To drive the 100 MHz, 500MV (Max) clock input the
following sources can be used: CML, HCSL, LVPECL and LVDS. You should feed only one of the differential pair signal to the input or they should convert
the differential to single ended.
Section C
PERST# (Bus Reset Button): Reset will be asserted in both PCIe connectors as long as the button is pressed.
LINK WIDTH LEDs : 5 LEDs indicate whether x1, x2, x4, x8 or x16 link width is selected.
SEL : Pushbutton switch is used to turn off the terminations and remove all loads on the unused receivers (on both the Z416 Exerciser Plug-in card and the
DUT) depending on the maximum bus link width to be analyzed. Press the pushbutton switch (SEL) to move to the next link width as indicated by the
LEDs (next to the switch) on the Gen4 Test Platform.
CLKREQ# (Dis/Ena) Switch: When enabled, allows CLKREQ# to control (turn on or off) the reference clock. If the switch is enabled, the CLKREQ#
signal must be asserted to have the clock turned on. If the switch is enabled and the CLKREQ# signal is deasserted the clock is turned off (low power
mode). If the switch is disabled, the CLKREQ# signal is ignored and the reference clock is active.
(Default position: Dis)
REFCLK LED (below the CLKREQ# text and above the CLKREQ# (Dis/Ena) Switch): When REFCLK is active, the LED will be ON. When REFCLK is not
active, the LED will be OFF.
Summit Z416 PCIe x16 Slot : Powered by Test Platform, supplies 3.3V up to 3A and 12V up to 5.5A. Can be used with other equipment.
SSC (Selector Switch for Z416) : When using the internal reference clock, turns Spread Spectrum Clocking (SSC) on or off. If using external reference
clock, the switch has no effect. (Default position: Off)
SMBus (Selector Switch for SMBus): Select SMBus signals voltage levels. (Default position: 3.3V)
RefClk (Reference Clock Selector Switch for Z416): Selects the internal or external clock. External clock selection means to use the clock supplied at
the RefClk In for Z416 slot as described above. (Default position: Int)
Z416 Slot 12V / Z416 Slot 3.3V: 2 LEDs monitor power to Summit Z416 slot.
Section D
RefClk Source for DUT (SRIS) : Control switch to select Common (both slots use the same clock) or Separate (each slot uses an independent clock).
(Default: Common)
SSC Selector Switch (for DUT
:) When using the internal reference clock, turns Spread Spectrum Clocking (SSC) on or off. If using external reference
clock, the switch has no effect. (Default position: Off)
Ref Clk (Reference Clock Selector Switch for DUT): Selects the internal or external clock. Clock is delivered to DUT slot.
(Default position: Int)
Power Selector Switch: The DUT Power switch controls power to the DUT slot. (Default position: Off).
When the switch is OFF, an I
2
C device with address 0x82 can be controlled from a Summit Z416 through SMBus to toggle the power in the DUT
PCIe Connector. When the switch is ON, the I
2
C device is disabled and will not interfere in the SMBus.
DUT 12V / DUT 3.3V LEDs: 2 LEDs monitor power to the DUT slot.
DUT 6-pin DC Power Connector : Supplies 12 V up to 6.25 A for graphics cards (cable provided).
DUT 8-pin DC Power Connector : Supplies 12 V up to 12.5 A for graphics cards (cable provided).
REFCLK
CLKREQ#
(Dis/Ena) Switch
Active LED
Select Link Width
Pushbutton