Measurement Computing ZonicBook 618E rev.3.4 - Manual (Page 15)

General Comments
Ethernet Connection
ZonicBook/618E units transfer the acquired data to the PC via a 10/100BaseT Ethernet connection. The
Ethernet connection allows for a continuous stream of data to be collected and stored.
One ZonicBook/618E can transfer data back to the PC via Ethernet at the full rate
of 1 MSample/sec. When multiple ZonicBook/618E units are attached to the same
Ethernet line, the Ethernet may not support the full sample bandwidth. In this
situation, the use of a WBK30 option may be required. To obtain information
regarding the latest improvements in Ethernet-based transfer rates contact the
factory.
The 10/100BaseT Ethernet interface can be used in a point-to-point application, such as when attached to a
notebook PC and used in the field. In this case the 2 Mbytes of buffer storage built into the
ZonicBook/618E is adequate to ensure that continuous data transfers to the PC can occur without risk of
data loss.
The 10/100BaseT Ethernet interface can also be used to connect the ZonicBook/618E to a network,
presuming the network has enough available bandwidth. The network bandwidth required is a function of
the number of signals being measured, and the bandwidth of the signals. The built-in 2 Mbytes of memory
can be expanded up to 128 Mbytes via an internal WBK30 memory option (factory installed).
If continuous, multi-channel measurements are required, it is recommended that a separate Ethernet
connection between the ZonicBook and the PC be established to ensure uninterrupted data transfer.
Power
ZonicBook/618E can be powered directly from a 9 to 30 VDC source, such as a standard automotive
battery. It can also be powered from a 100 to 250 VAC source via its power adapter, which converts the
AC to the required DC. With an 8-channel ZonicBook system, a DBK34A battery/UPS provides
approximately two hours of operation. Power options are detailed in Appendix C.
Measurement
The dynamic range of the ZonicBook on a single range and measuring a single channel is 70 dB. However,
the ZonicBook offers a wide effective dynamic range.
All channels are sampled synchronously, resulting in better than 1 degree of phase matching between
channels. The maximum per-channel bandwidth is a function of the number of channels enabled. For
example, up to 4 channels can be enabled using the maximum bandwidth of 100 kHz, while 55 kHz is the
maximum bandwidth when 8 channels are enabled, and 29 kHz is the maximum bandwidth in a 16 channel
system. A programmable low-pass filter ensures that unwanted frequencies are rejected before being
sampled, with rejection of 75 dB minimum.
ZonicBook/618E 948493 Block Diagrams 2-3