LabJack UE9 - Appendix A - Specifications

Appendix A - Specifications
Specifications at 25 degrees C and Vusb/Vext = 5.0V, except where noted.
Parameter
Conditions
Min
Typical
Max
Units
General
USB Cable Length
5
meters
Ethernet Cable Length (1)
100
meters
Supply Voltage
3.6
5
5.3
volts
Typical Supply Current (2)
Control Low
85
105
mA
Control High
125
160
mA
Operating Temperature
-40
85
°C
Clock Error
~25°C
±30
ppm
-10 to 60 °C
±50
ppm
-40 to 85 °C
±100
ppm
Typ. Command Execution Time (3)
Ethernet
1.2
USB high-high
1.4
USB other
4
Vs Outputs
Typical Voltage, USB (4)
Self-Powered
4.5
5
5.25
volts
Typical Voltage, Wall-Wart
4.75
5
5.25
volts
Maximum Current (5)
200
mA
Vm+/Vm- Outputs
Typical Voltage
No-load
±5.8
volts
@ 1 mA
±5.6
volts
Maximum Current
1
mA
(1) Expected max Ethernet cable length is at least 100 meters by design, but we have only tested 33
meter cables. Customer feedback on longer cables is welcome.
(2) Typical current drawn by the UE9 itself, not including any user connections. Minimum value is the
typical current when the device is idle. Maximum value is the typical current when the device is very
busy.
(3) Total typical time to execute a single Feedback function with no analog inputs. Measured by timing
a Windows application that performs 1000 calls to the Feedback function. See Section 3.1 for more
timing information.
(4) Self-powered would apply to USB hubs with a power supply, all known desktop computer USB
hosts, and some notebook computer USB hosts.
(5) This is the maximum current that should be sourced through the UE9 and out of the Vs terminals.
The UE9 has internal overcurrent protection that will turn the UE9 off, if the total current draw exceeds
~490 mA.
Parameter
Conditions
Min
Typical
Max
Units
Analog Inputs
Unipolar Input Range (1)
AINx to GND
0
5/G
volts
Bipolar Input Range (1)
AINx to GND
-5
5
volts
Maximum AIN Voltage (2)
AINx to GND
-15
15
volts
Input Bias Current (3)
@ 1 volts
-15
nA
Input Impedance (3)
>10
MΩ
Source Impedance (4)
10
kΩ
Temperature Drift
G=1
10
ppm/°C
Absolute Accuracy
Res 12-17
±0.025
±0.05
% FS
UE9-Pro, Res=18
±0.005
±0.01
% FS
Peak-to-Peak Noise
See Appendix B
Integral Linearity Error
G=1
±0.02
% FS
G=8
±0.03
% FS
UE9-Pro, Res=18
±0.0001
% FS
Differential Linearity Error
12-bit
±1
counts
16-bit
±4
counts
UE9-Pro, Res=18
±1
counts
Stream Data Buffer Size
182361
C/R Acquisition Time
See Section 3.1
1.2
125
ms
Stream Speed (5)
12-bit stream
up to 80k
samples/s
13-bit stream
16000
samples/s
14-bit stream
4000
samples/s
15-bit stream
1000
samples/s
16-bit stream
250
samples/s
Channel-to-Channel Delay (6)
12-bit stream
12
µs
13-bit stream
44
µs
14-bit stream
158
µs
15-bit stream
670
µs
16-bit stream
2700
µs
(1) For actual nominal input ranges see Section 2.7 of the UE9 User's Guide.
(2) Maximum voltage to avoid damage to the device. Protection level is the same whether the device is
powered or not. When the voltage on any analog input exceeds 6.0 volts, all other analog inputs are
also affected, until the overvoltage is removed. At 6.5 volts, there is a ~1 mV offset noticed on other
channels, increasing to a ~5 mV offset at 15.0 volts.
(3) This is the steady state input bias current and impedance. When the analog input multiplexer
changes from one channel to another at a different voltage, more current is briefly required to change
the charge on the input amplifier. The steady state input bias current is very flat across the common
mode voltage range, except for voltages of about 4.5 or higher where the bias current shifts to typically
+250 nA
(4) To meet specifications, the impedance of the source signal should be kept at or below the
specified value. With a higher source impedance, noticable static errors can occur due to the bias
current flowing through the source impedance. There are also dynamic errors that can become
noticable as the source impedance can degrade the ability of the internal multiplexer to settle quickly
when changing between channels with different voltages.
81