Measurement Computing ZonicBook 618E rev.3.4 - Manual (Page 16)

2-4 Block Diagrams 948493 ZonicBook/618E
Tachometer Inputs
The ZonicBook has 4 BNC input connectors intended for measuring tachometer signals. These are labeled
TACH1 through TACH4. To accommodate a wide variety of tachometers, each input is programmable for
input range up to ±75V. The tachometer inputs have programmable AC/DC coupling, and can be set to
one of three modes: Counter, Period, or Voltage.
Tach waveforms can be captured in realtime, thus allowing real-time troubleshooting of tachometers. Tach
inputs can be used by eZ-Analyst and eZ-TOMAS software to determine relationships between frequency
domain input channels to a known input frequency source.
Note: A tachometer can be connected to one of the 8 analog input channels (CH1 through CH8); but if this
is done the tachometer must be set to Voltage mode, not Counter or Period.
Digital I/O
To make use of the Digital I/O feature the ZonicBook/618E must be operating with eZ-TOMAS or
eZ-NDT. The 8-bits of digital I/O are provided via a front panel removable screw terminal. Each bit is
programmable as input or output.
Signal Conditioning
Every input to a ZonicBook/618E system is software programmable for voltage range, AC/DC coupling,
ICP® source [if AC coupling is selected], and is capable of reading sensor calibration information using
Transducer Electronic Data Sheet (TEDS), providing that the option is available and that the software
supports it. TEDS support is available with eZ-Analyst software, but is not supported by eZ-TOMAS.
Contact the factory for up to date information regarding TEDS support.
When ICP sensors are attached, AC coupling with 4 mA bias current is selected via software. AC coupling
without bias is also possible for measuring any AC waveform from 25 mV to 5V full scale. DC coupling is
also software selectable, with full scale ranges from 25 mV to 25V DC coupling is useful when attaching
proximity sensors.
To indicate that a sensor has operated outside of its intended range, a front-panel “Overrange” LED will
light. Each of the 8 channels has its own LED. Because the LED status is latched when the limit is
exceeded, an operator will know whether or not an overrange condition occurred at some time during an
acquisition.
ZonicBook/618E can detect open ICP sensors. Should an open sensor be detected a “Transducer Fault”
LED will light for the open channel. Fault indication is also available from within the eZ software
packages.
Source Output
ZonicBook/618E includes one analog output channel that is capable of generating continuous sine and
swept sine waveforms. The waveforms have programmable amplitudes up to 10V peak-to-peak (10Vpp)
and frequency up to 5 kHz. Each 8-channel WBK18 option also includes one analog output channel
capable of generating the same range of sine wave outputs.
Reserved for Future Use
The following connectors are reserved for future use.
• 2 SYNC Ports, rear panel
• Expansion Port, DB25 female connector; rear panel
• Clock Input BNC, front panel