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Chapter 1 Getting Started with the cDAQ Chassis
Reserving the Chassis in MAX
When the cDAQ chassis is connected to a network, multiple users can access the chassis. To
perform any DAQ functionality on the C Series modules, including reset chassis and self-test,
you must reserve the cDAQ chassis in MAX. Only one user at a time can reserve the cDAQ
chassis.
If the cDAQ chassis was not reserved automatically after it was added (Add Device), you can
reserve the cDAQ chassis in MAX by expanding Devices and Interfaces»Network Devices,
selecting the chassis, and clicking the Reserve Chassis button. The Override Reservation
dialog box appears when you attempt to explicitly reserve a chassis. Agreeing to override the
reservation forces the cDAQ chassis to be reserved by the current user.
QoS Priority
(NI cDAQ-9191) The QoS Priority sets the priority for the data transferred over the wireless
network adapter when the wireless device is sharing the channel with one or more devices. There
are four priorities: Disabled, Normal, High, and Critical, as described in Table 1-2. The default
is Normal.
You can set or update the QoS Priority at any time when connected to a wireless network. In
MAX, expand Devices and Interfaces»Network Devices, select the chassis, click the Network
Settings tab, click More Settings, and select a priority.
National Instruments recommends setting the QoS Priority to Normal if you are connecting to
an existing wireless network. Setting the QoS Priority to High or Critical might affect the
performance of other devices on your wireless network.
When using the wireless QoS feature, verify that WMM/QoS is enabled in your access
point/router settings.
Note Ad Hoc networks do not support wireless QoS.
Table 1-2. QoS Priority
MAX Option QoS 802.11e Standard
Disabled Disabled —
Normal (default) Enabled Best effort
High Enabled Video
Critical Enabled Vo i c e
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