M9021A PCIe Cable Interface Module Installation. Keysight PXIe System Modules and Cable
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M9021A PCIe Cable Interface Module Installation
M9021A PCIe Cable Interface Module Installation
The M9021A uses special features built into the Keysight M9018 chassis and is not compatible with the PXIe System Slot in other PXIe chassis.
M9021A Switch Settings
Switch Description
S201 Ensure that S201 is in the NC position (right side down).
S301 For applications, where the M9021A provides a cabled PCIe link between the M9018A chassis and an external host computer, install the M9021A in the system slot (slot 1) of the M9018A PXIe chassis.
The two switches on S301 must be in the Target (right) position. This is the default setting.
For connecting to a downstream RAID solution, such as the JMR mass storage, the M9021A must be installed in a x8 hybrid slot
(either slot 2, 6, 11, or 15) in the PXIe chassis. In this case, both switches on S301 should be in the Host (left) position.
S301. Switches shown in Target
(default) position; used when the
M9022A is installed in system slot
(slot 1) of the M9018A chassis.
Move both switches to Host (left) position for use with the M9392A
RAID array (but only in a data streaming/storage solution).
S201. Ensure that S201 is in the
NC position, (right side down).
Figure 6 M9021A Switch Locations
Keysight PXIe System and Cable Interface Installation Guide 23
M9021A PCIe Cable Interface Module Installation
M9021A LEDs
The M9021A Cable Interface module has both front panel and PC board LEDs that indicate how many PCIe lanes are actually being used to communicate between the PC and the chassis. If your chassis application is running slower than you expect, check the M9021A LEDs to see how wide your data path is to the chassis.
If you remove a slot 2 module or filler panel to view the M9021A
LEDs, ensure that the module or filler panel is reinstalled. This is required to maintain chassis cooling as well as minimize radio frequency interference.
The M9021A front panel has four LEDs to indicate the communication speed to the host controller. The following table describes the LED indications:
Configuration to Host PC x1 PCIe Link x4 PCIe Link x8 PCIe Link
M9021A Front Panel LEDs x4 Cable & x4 Chassis x4 Cable & x4 Chassis x4 Cable & x4 Chassis x8 Cable & x8 Chassis
PC Board (or side) LEDs
Single pair yellow LEDS
4 pairs yellow LEDs
All 8 pairs yellow LEDs
24
Figure 7 M9021A Front Panel LEDs
Keysight PXIe System and Cable Interface Installation Guide
M9021A PCIe Cable Interface Module Installation
Figure 8 shows the LEDs that are illuminated for single lane (x1)
communications to the chassis. The left-most set of LEDs indicates the number of lanes communicating to the chassis backplane, while the right-most set of
LEDs indicates the number of lanes communicating to the host PC.
M9021A Cable Interface Module
An ON LED indicates that the lane is active based on the card detecting that the lane’s receiver is enabled.
6
5
4
BACK PLANE LANE DETECT
3
2
1
0
7
6
5
4
3
2
1
Figure 8 Single lane communications between host controller and the chassis
Figure 9 shows the LEDs that are illuminated for x4 communications.
M9021A Cable Interface Module
An ON LED indicates that the lane is active based on the card detecting that the lane’s receiver is enabled.
6
5
4
BACK PLANE LANE DETECT
3
2
1
0
7
6
5
4
3
2
1
Figure 9 x4 communications between the host controller and the chassis
Keysight PXIe System and Cable Interface Installation Guide 25
M9021A PCIe Cable Interface Module Installation
Figure 10 shows the LEDs that are illuminated for x8 communications. An
example of eight lane communications would be an eight lane M9048A PCIe
Desktop Adapter installed in an x8 (mode x8) slot or in an x16 (mode x16) slot.
M9021A Cable Interface Module
An ON LED indicates that the lane is active based on the card detecting that the lane’s receiver is enabled.
6
5
4
BACK PLANE LANE DETECT
3
2
1
0
3
2
1
7
6
5
4
Figure 10 x8 communications between the host controller and the chassis
26 Keysight PXIe System and Cable Interface Installation Guide

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