Chapter 11: specifications, Specifications – Sensoray 826 User Manual
Page 75
Chapter 11: Specifications
Digital I/O
Channels
Number/type
48 bi-directional
Signal levels
5 V TTL/CMOS
Sampling rate
50 Ms/s
Output
Driver type
Open drain, active-low sink driver
Internal pull-up impedance
10 k
Ω
, 5%
On-state sink current (maximum)
24 mA
Sink current when board unpowered
< 20 µA
Fail-safe mode
Yes
Input
Receiver type
Schmitt trigger
Noise/debounce filter
Interval: 0 to 1.3107 ms in 20 ns steps, common to all channels.
Enable/disable: per channel.
Counters
Channels
Number/type
6 multifunction
Resolution
32 bits
Count rate (maximum)
25 MHz (external clock), 50 MHz (internal clock)
Operating modes
Incremental encoder, event counter, frequency counter, pulse width
measure, PWM generator, pulse generator, custom
Clock frequency
Internal
50 MHz, 50 ppm
External (maximum)
Derate for deviations from 50% duty cycle:
6.25 MHz @ quadrature x4
12.5 MHz @ quadrature/mono x2
25 MHz @ quadrature/mono x1
Inputs (CLK, IX)
Receiver type
RS-422 differential
Signal levels
Differential: RS-422, ±7 V CMV maximum
Single ended: 5 V TTL/CMOS
Noise/debounce filter
Interval: 0 to 1.3107 ms in 20 ns steps, common per channel.
Enable/disable: independent IX, CLK pair.
Analog Inputs
Channels
Number/type
16 differential
ADC
Resolution
16 bits
Conversion time
≤
3 µs
Input
Differential voltage measurement ranges
±1 V, ±2 V, ±5 V, ±10 V
Absolute input voltage (signal + CMV, max)
±11 V off GND
CMRR
> 80 dB @ 1 kHz, > 65 dB @ 10 kHz
Input impedance
>10 M
Ω
in parallel with 100 pF
Settling time for multichannel measurements
4µs max. @ < 1 k
Ω
input Z with no gain change
Triggering
Modes
Hardware: 48 external digital inputs, 6 internal counter outputs.
Software: 6 virtual digital outputs.
Untriggered (free-running).
Analog Outputs
Channels
Number/type
8 single ended, with local (on-board) sense
DAC
Resolution
16 bits
Conversion time
(serializer transmission + analog conversion)
1.04 µs
Output
Voltage ranges
0 to +5 V, 0 to +10 V, ±5 V, ±10 V
Load current (maximum)
2 mA
Fail-safe mode
Yes
826 Instruction Manual
70
Specifications