Measurement Computing USB-1616FS - Manual (Page 27)

USB-1616FS User's Guide Specifications
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USB +5V voltage
Table 14. USB voltage specifications
Parameter Specification
USB +5V (VBUS) input voltage range 4.75 V min to 5.25 V max
External power input
Table 15. External power input specifications
Parameter Conditions Specification
External power input +6.0 VDC to 12.5 VDC (9 VDC
power supply included).
Voltage supervisor limits – PWR LED.
(Note 8) 6.0 V > Vext or Vext > 12.5 V PWR LED = Off (power fault)
6.0 V < Vext < 12.5 V PWR LED = On
External power adapter (included) MCC p/n CB-PWR-9V3A +9 V ±10%, @ 3 A
Note 8: The USB-1616FS monitors the external +9 V power supply voltage with a voltage supervisory circuit.
If this power supply exceeds its specified limit, the PWR LED will turn off indicating a power fault
condition.
External power output
Table 16. External power output specifications
Parameter Conditions Specification
External power output – current range Note 9 4.0 A max
External power output Voltage drop between power input
and daisy chain power output 0.5 V max
Compatible cable(s) for daisy chain C-MAPWR-x X = 2, 3 or 6 feet
Note 9: The daisy chain power output option allows multiple MCC USB Series products to be powered from a
single external power source in a daisy chain fashion. The voltage drop between the device power
supply input and the daisy chain output is 0.5 V max Users must plan for this drop to assure that the
last device in the chain will receive at least 6.0 VDC.
USB specifications
Table 17. USB specifications
USB "B" connector Input
USB device type USB 2.0 (full-speed)
Use of multiple USB-1616FS devices requires a USB 2.0 hub.
Device compatibility USB 1.1, USB 2.0
USB "A" connector Downstream hub output port
USB hub type Supports USB 2.0 high-speed, full-speed, and low-speed operating points
Self-powered, 100mA max downstream VBUS capability
Compatible products MCC USB Series devices
USB cable type (upstream and
downstream) A-B cable, UL type AWM 2527 or equivalent (min 24 AWG VBUS/GND,
min 28 AWG D+/D–)
USB cable length 3 meters, max (9.84 feet)