Spider DSA User’s Manual
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between all channels, either on the same Spider front-end or across different
front-ends. Channel phase match, even between separate Spider front-ends, is
within 1.0 degree at 20 kHz which is suitable for high quality structural and
acoustics applications requiring cross channel measurement.
The Spider-80Xi system with the 64-channel chassis is power by AC power, 100
to 240 VAC. The Spider-80Xi system with the 32-channel chassis is power by the
DC power, 10V to 22V. The latter can be easily used together with an external
battery pack. With Spider-Battery, a special model of battery CI developed, the 32
channel Spider-80Xi can run up to 4 hours without interruption.
Spider-80Xi front-ends have voltage, IEPE, which are ideal for shock, vibration,
acoustic, or general-purpose voltage measurements. The Spider product line
performance is the best in class with the highest dynamic range of any similar
product. With patented technology, each measurement channel can detect
signals as small as 6 µV and as large as ±20 V. Proprietary hardware technology
delivers more than 160 dBFS dynamic range. The extremely high dynamic range
eliminates the need for multiple front-end gain settings.
Spider-80Xi can operate in Black Box mode which allows it to acquire data
without a PC. In this mode, a PC is used only to configure the system before the
test and then to download the data after the test is complete. During the test, the
front-end can be operated according to a preset schedule or from a variety of
external devices, such a Wi-Fi enabled PDA or iPad.
Spider-80Xi is equipped with powerful and flexible data acquisition functions.
Continuous time data recording and spectral analysis can be initiated by many
events including user operation, pre-set run schedule, alarm limit trigger, input
trigger or digital input trigger. A high-performance removable 2.5-inch hard disk
is used as a storage media inside Spider-80Xi. The default capacity of hard disk is
250GB. When recorded, data will be written in the NTFS file format. Data is
extracted from the hard disk using Crystal Instruments PC software to transfer
data to the PC, or the hard disk can be physically removed and connected to
another PC.
Spider-81/81B
The Spider-81 series is a highly modular, distributed, scalable vibration control
system developed by Crystal Instruments. It represents the fourth generation of
vibration control systems with advanced technology unavailable in the current
generation.
Unlike traditional controllers that rely heavily on an external computer for real-
time operations, the Spider-81 is the first controller that directly integrates time-
synchronized Ethernet connectivity with embedded DSP technology. This greatly
increases the control performance, system reliability, and failure protection of the
controller. It also allows a large number of channels to be configured without
sacrificing system performance.
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