Measurement-computing miniLAB-1008 Instrukcja Użytkownika Pobierz pdf (Strona 30)

miniLAB 1008 User's Guide Specifications

Counters

Counter type Event counter

Number of channels 1

Input source CTR screw terminal

Input type TTL, rising edge triggered

Resolution 32 bits

Schmidt trigger hysteresis 20 mV to 100 mV

Input leakage current ±1 µA

Maximum input frequency 1 MHz

High pulse width 500 ns min

Low pulse width 500 ns min

Input low voltage 0V min, 1.0 V max

Input high voltage 4.0 V min, 15.0 V max

Non-volatile memory

Memory size 8192 bytes

Address Range Access Description

0x0000 – 0x17FF Read/Write A/D Data (4k samples)

0x1800 – 0x1EFF Read/Write User data area

0x1F00 – 0x1FEF Read/Write Calibration Data

Memory configuration

0x1FF0 – 0x1FFF Read/Write System Data

Power

Parameter Conditions Specification

Supply Current (Note 5) 20 mA

Connected to Self-Powered Hub 4.5 V min, 5.25 V max

+5V USB power available

(Note 6)

Connected to Bus-Powered Hub 4.1 V min, 5.25 V max

Connected to Self-Powered Hub 450 mA min, 500 mA max Output Current (Note 7)

Connected to Bus-Powered Hub 50 mA min, 100 mA max

Note 5:

Note 6:

Note 7:

This is the total current requirement for the miniLAB-1008 which includes up to 5mA for the status

LED.

Self-powered refers to USB hubs and hosts with a power supply. Bus-powered refers to USB hubs and

hosts without their own power supply.

This refers to the total amount of current that can be sourced from the USB +5V, analog outputs and

digital outputs.

General

Parameter Conditions Specification

25 °C ±30 ppm max

0 to 70 °C ±50 ppm max

USB controller clock error

-40 to 85 °C ±100 ppm max

Device type USB 1.1 low-speed

Device compatibility USB 1.1, USB 2.0

Environmental

Operating temperature range -40 to 85 °C

Storage temperature range -40 to 85 °C

Humidity 0 to 90% non-condensing

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