CyberResearch UCERB 24 Bedienungsanleitung PDF herunterladen (Seite 22)

UCERB 08 User's Guide Specifications

External power input

Table 4-3. External power input specifications

Parameter Conditions Specification

External power input

+6.0 VDC to 12.5 VDC (9 VDC power

supply included)

6.0 V > Vext or Vext >

12.5 V

PWR LED = Off (power fault)

Voltage supervisor limits - PWR LED

(Note 1)

6.0 V < Vext < 12.5 V PWR LED = On

External power adapter (included) Comes with UCERB 08 +9 V ±10%, @ 1 A

Note 1: The UCERB 08 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 4-4. External power output specifications

Parameter Conditions Specification

External power output - current

range

4.0 A max.

External power output (Note 2)

Voltage drop between power input and daisy chain power

output

0.5 V max

Compatible cable(s) for daisy

chain

UCERB 08

x= 2 , 3, or 6

feet

Note 2: The daisy chain power output option allows multiple USB data acquisition boards to be

powered from a single external power source in a daisy chain fashion. The voltage drop

between the module power supply input and the daisy chain output is 0.5 V max. Users

must plan for this drop to ensure the last module in the chain will receive at least 6.0 VDC.

USB specifications

Table 4-5. USB specifications

USB "B" connector Input

USB device type USB 2.0 (full-speed)

Device compatibility USB 1.1, USB 2.0

USB "A" connector Downstream hub output port

Supports USB 2.0 high-speed, full-speed and low-speed operating

points

USB hub type

Self-powered, 100 mA max downstream VBUS capability

Compatible products USB DIO Series

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.

Relay contact pull-up/down option

Table 4-6. Relay pull-up/pull-down specifications

R1, R3, R5, R7, R10, R12, R14, R16 Relays NO contact pull-up (to USB +5V) / pull-down

R2, R4, R6, R8, R9, R11, R13, R15 Relays NC contact pull-up (to USB +5V) / pull-down

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