Keysight M9502A, Руководство пользователя

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8 Keysight M9502A/M9505A AXIe Chassis User Guide
Introduction AXIe Embedded System Module (ESM)
AXIe Embedded System Module (ESM)
The ESM is installed in a half-height slot at the base of the chassis. It performs
the following functions:
-
tracks inserted modules and manages power requirements
-
monitors chassis temperature and controls variable-speed chassis fans
-
monitors module sensors and reports component failures to a system log
-
acts as a Gigabit Ethernet switch; forwards packets along the backplane
-
connects an external host PC to the chassis
-
synchronizes timing across all modules through the Keysight Trigger Bus,
using an internal or external clock source
ESM Front Panel
1 PCIe Connects a remote host PC to the chassis via PCIe.
Gen 2 compliant PCIe x8 connector.
MULTIFRAME Synchronizes timing signals with multiple daisy-chained chassis (either
2-slot or 5-slot). 36-pin mini D connectors use accessory Keysight cables.
2 INPUT Gets timing signals from the previous chassis. If this chassis is at the head
of the chain, it becomes the master, using an internal or external clock to
send timing signals to other chassis in the chain.
3 OUTPUT Provides timing signals to the next chassis.
TRIGGER External trigger connections. SMA connectors with ESD suppression.
4 IN Accepts an external trigger. Adjustable threshold input, +/-5V range, 250
mV minimum swing.
5 OUT Extends the parallel trigger bus to external instruments. 3.3V CMOS, 50

line drive, 3-state.
CLOCK External clock connections. SMA connectors with ESD suppression.
6 IN Accepts an externally sourced timing input. Input range -5V to +5V, AC
coupled, unterminated, 100 mV minimum swing.
7 OUT Extends the internal clock source to external instruments. 3.3V CMOS, 50

line drive, 3-state.
8 RESET Reset chassis. Insert small pin, hold until Status LED turns amber, remove
pin.
9 LAN Connects the host PC to the chassis, RJ45 connector. Tri-rate
10/100/1000 Base-T, auto crossover. Green LINK light and amber ACT light
indicate power and port activity.
An embedded controller module does not use this port; it communicates
with the ESM through the chassis backplane.
The LAN port is for communication with the AXIe chassis, not individual
modules.
10 STATUS Light The status indicator light is a bi-color LED. Green indicates normal
operation. Red indicates a power-up error. Both lights on (amber) indicates
the chassis is powered on and booting.