VTI Instruments EMX-4016B, User Manual

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Introduction 17
S
PECIFICATIONS
D
IGITIZER
S
PECIFICATIONS
EMX-4250/4251 EMX-4350 EMX-4380
Input Specifications
No. of Channels 4250: 16ch / 4251: 8ch 4ch 4ch
Input Connector
25-pin Micro-D
Molex 83614-9012 BNC, shell floating from chassis ground
Center Pin = HI; Shell = LO
Input Type
Differential
Pseudo-differential
Differential
Differential
Single-Ended
Input Ground Isolation None None
ON or OFF
ON: 50 Vdc, 100 MΩ
Input Coupling AC, DC AC, DC AC
Common Mode Rejection (CMR)
@ 100 Hz, AC or DC Coupling
<-80 dB <-80 dB <-80 dB
Input Over-Voltage Protection
Differential ±40 V ±40 V ±40 V
Pseudo-Differential
HI: ±40V
LO: ±10V
N/A N/A
Input Impedance
Differential Voltage 4 MΩ // 200 pF 2.4 MΩ // 140 pF 6 MΩ // 90 pF
Pseudo-Differential
HI: 2 MΩ // 200 pF
LO: 100 Ω
N/A N/A
Charge N/A N/A 500 MΩ
Input Ranges
Voltage/IEPE (±V-pk) 0.1, 0.2, 0.5, 1, 2, 5, 10 0.1, 1, 10, 20
Charge (±pC-pk) N/A N/A 100, 1k, 10k
IEPE
IEPE Current (mA) 4.5, 10 mA
0-20 mA
<0.1 mA resolution
4.5, 10 mA
IEPE Current Accuracy ±5% ±0.1 mA ±5%
IEPE Compliance Voltage @ 5 mA >21 V
IEPE Open/Short Fault Detection
Break-Out Box LED &
Software
Front Panel LED & Software
TEDS IEEE 1451.4 / 1-wire
Max. Input Shunt Capacitance for
TEDS to work
2,600 pF 2,600 pF 2,600 pF
Measurement Accuracy
Amplitude Accuracy @ 1 kHz
Voltage & IEPE
Typ.: ±0.02 dB
Max.: ±0.05 dB Typ.: ±0.02 dB
Max.: ±0.05 dB Typ.: ±0.02 dB
Max.: ±0.05 dB
Charge N/A N/A
Typ.: ±0.1 dB
Max.: ±0.15 dB
Residual DC Offset
Voltage & IEPE (AC or DC Coupling)
0.1 V, 0.2 V: <±0.2 mV
Other Ranges: <±2 mV 0.1V, 1V: <±0.1 mV
10V, 20V: <±1 mV
Charge N/A N/A <1pC
Channel-to-Channel Matching
Amplitude Match, @ 1 kHz ±0.005 dB ±0.01 dB
Phase Match @ 1 kHz ±0.002° ±0.002°
Phase Linearity ±0.05° up to 96 kHz ±0.05° up to 270 kHz
Phase Accuracy vs. Trigger <0.1° @ 1 kHz <0.1° @ 1 kHz <0.1° @ 1 kHz
Frequency Response Characteristics
Slew Rate: 10% to 90% of Range 1.1 µs 0.5 µs 0.5 µs
AC Coupling -3 dB Corner (Hz) IEPE/Volts: 0.24 Hz IEPE/Volts: 0.5 Hz
IEPE/Volts: 0.20 Hz
Charge: 0.32 Hz
Maximum Bandwidth