Measurement Computing E-1608-OEM - Manual (Page 19)

Chapter 4
Specifications
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog input
Table 1. General analog input specifications
Parameter Condition Specification
A/D converter type Successive approximation
ADC resolution 16 bits
Number of channels 4 differential, 8 single-ended
Software-selectable
Input voltage range ±10 V, ±5 V, ±2 V, ±1 V; software-selectable per channel
Absolute max input voltage CHx relative to AGND  ±20 V max (power on)
 ±12 V max (power off)
Input impedance  1 GΩ (power on)
 1200 Ω (power off)
Input bias current ±10 nA
Input bandwidth All input ranges,
small signal (–3 dB) 700 kHz
Input capacitance 60 pf
Max working voltage (signal
+ common mode) ±10 V range ±10.2 V max relative to AGND
±5 V range ±10.2 V max relative to AGND
±2 V range ±9.5 V max relative to AGND
±1 V range ±9.0 V max relative to AGND
Common mode rejection ratio (f
IN
= 60 Hz, all input
ranges)
86 dB
Crosstalk Adjacent differential mode
channels, DC to 10 kHz –75 dB
Input coupling DC
Sample rate 0.019 Hz to 250 kHz
Software-selectable
Trigger source TRIG (see External trigger on page 23)
Sample clock source Internal A/D clock or external A/D clock (AICKI pin)
Internal sample clock stability ±50 ppm
Internal sample clock
timebase 80 MHz timer with 32-bit period
(available frequencies are 80 MHz / integer period)
Throughput Software paced 1000 to 5000 S/s typ, on local network (Note 1)
Hardware paced 250 kS/s max
Channel gain queue Up to 8 elements Software-selectable channel and range for each queue
element
Warm-up time 15 minutes min
Note 1: This is the typical throughput when the device and host are both connected by Ethernet to the same
local network. The throughput can vary significantly if a wireless connection is involved or data is sent
over the internet and is not guaranteed.