VTI Instruments EMX-4016B, User Manual

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VTI Instruments Corp.
18 Introduction
EMX-4250/4251 EMX-4350 EMX-4380
Volts (-0.2 dB), 625 kSa/s N/A 270 kHz 270 kHz
Charge (-1 dB), 625 kSs/s, CSH=2 nF N/A N/A 270 kHz
Volts (-0.1 dB), 204.8 kSa/s 96 kHz 88 kHz 88 kHz
Alias Rejection, Typical, 10 V Range -90 dB -86 dB
ADC
ADC Resolution 24-bits 24-bits 24-bits
ADC Data Rate (Sa/s) ( f
DATA
)
131,072: ÷1, ÷2, ÷4
204,800: ÷1, ÷2, ÷4
409,600: ÷1, ÷2, ÷4, ÷8
524,288: ÷1, ÷2, ÷4, ÷8
625,000: ÷1, ÷2, ÷4, ÷8
ADC Post-Decimation
÷2
N
, N=0, 1, .., 16
÷5: Optional
÷2
N
, N=0, 1, .., 16
÷5: Optional
ADC Pass-Band (0.0001 dB ripple) 0.454 * f
DATA
0.424 * f
DATA
ADC Pass-Band (-0.1 dB) 0.469 * f
DATA
0.432 * f
DATA
ADC Stop-Band (<-100 dB) 0.546 * f
DATA
0.576 * f
DATA
Group Delay 39 ÷ f
DATA
28 ÷ f
DATA
Dynamic Characteristics
Noise @ frequencies >100 Hz
0.1 V: 30 nV/√Hz
0.2 V: 30 nV/√Hz
0.5 V: 40 nV/√Hz
1 V: 50 nV/√Hz
2 V: 86 nV/√Hz
5 V: 200 nV/√Hz
10 V: 400 nV/√Hz
0.1 V: 30 nV/√Hz
1 V: 40 nV/√Hz
10 V: 270 nV/√Hz
20 V: 500 nV/√Hz
THD (dB) Typical @ 1 kHz -86 dB -100 dB
SFDR (dB) Typical, @1 kHz
0.1 V: -92dB
0.2 V: -98 dB
0.5 V: -106 dB
1 V: -112 dB
2 V: -118 dB
5 V: -120 dB
10 V: -120 dB
0.1 V: -92 dB
1 V: -112 dB
10 V: -124 dB
20 V: -130 dB
Channel-to-Channel Crosstalk, 1 kHz -98 dB
0.1 V: -112 dB; Other
Ranges: -122 dB
Other
Built-In Self-Calibration Yes Yes Yes (Voltage only)
On-board Memory
128MBytes
EMX-4250: 1.875 MSa/ch
EMX-4251: 3.75 MSa/ch
128MBytes
7.5 MSa/ch
Table 1.1 Digitizer Specifications
T
RIGGER
I
NPUT
S
PECIFICATIONS
EMX-4250/4251 EMX-4350 EMX-4380
Input Connector
25-pin Micro-D
Molex 83614-9012
Pins 5 (Trig) & 18 (Gnd)
SMB, shell connected to chassis ground
Input Type Single-Ended Single-Ended Single-Ended
Input Impedance 100 kΩ // 220pF 100 kΩ // 220 pF 100 kΩ // 220 pF
Input Voltage 0 V to 3.3 V 0 V to 3.3 V 0 V to 3.3 V
Input HIGH (V
IH
) >1.6 V >1.6 V >1.6 V
Input LOW (V
IL
) <0.6 V <0.6 V <0.6 V
Input Over-Voltage Protection -1 V to +7 V -1 V to +20 V -1 V to +20 V
Input Hysteresis 0.76 V 0.76 V 0.76 V
Table 2.2 Digitizer Trigger Input Specifications