Measurement Computing USB-CTR04 - Manual (Page 22)

USB-CTR04 User's Guide Specifications
Memory
Table 6. Memory specifications
Parameter Specification
FIFO 8 KS
Non-volatile EEPROM 32 KB (10 KB firmware storage, 22 KB user data)
Power
Table 7. Power specifications
Parameter Condition Specification
Supply current, USB source During enumeration < 100 mA
After USB enumeration < 500 mA
+VO power available After USB enumeration 5 V, ± 5%
+VO output current After USB enumeration 24 mA max per pin, constrained to 240 mA
across all output pins (counter outputs, timer
outputs, digital outputs, pacer clock output, and
+VO)
USB
Table 8. USB specifications
Parameter Specification
USB device type USB 2.0 (high-speed)
Device compatibility USB 1.1, USB 2.0, USB 3.0
USB cable type A-B cable, UL type AWM 2725 or equivalent. (min 24 AWG VBUS/GND,
min 28 AWG D+/D–)
USB cable length 3 m (9.84 ft) max
Environmental
Table 9. Environmental specifications
Parameter Specification
Operating temperature range 0 °C to 50 °C
Storage temperature range –40 °C to 70 °C
Humidity 0% to 90% non-condensing
Mechanical
Table 10. Mechanical specifications
Parameter Specification
Dimensions (L × W × H) 127 × 89.9 × 35.6 mm (5.00 × 3.53 × 1.40 in.)
User connection length 3 m (9.84 ft) max
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