Measurement-computing LGR-5320 Series Manuale Utente Scaricare il pdf (Pagina 32)

LGR-5320 Series User's Guide Specifications

External analog trigger

Table 6. External trigger specifications

Parameter Conditions Specification

External analog trigger source ATRIG input (pin 78)

Analog trigger input ranges LGR-5325: ±10 V

LGR-5327/5329: ±30 V, ±10 V,

software-selectable

Absolute maximum input voltage ATRIG_IN to AGND LGR-5325: ±25 V V max (power on and

power off)

LGR-5327/5329: ±38 V max (power on and

power off)

Input impedance

±30 V range

(LGR-5327/5329 only)

1 MΩ (power on/off)

±10 V range 10 GΩ (power on)

1 GΩ (power off)

Trigger modes Configurable for:

 Positive or negative slope

 Level

Trigger/hysteresis resolution 12 bits, 1 in 4096

Trigger/hysteresis levels LGR-5325: ±10 V/4096

LGR-5327/5329: ±10 V/4096 or

±30 V/4096, software selectable

Trigger/hysteresis accuracy ±2% of reading, ±50 mV offset

Latency 1.5 µS

Full power bandwidth (–3 dB) 1 MHz

Digital input

Table 7. Digital Input specifications

Parameter Specification

Number of inputs 16 channels

Input voltage range  LGR-5325/5327: 0 V to 28 V

 LGR-5329: 0 V to 30 V

Input type  LGR-5325/5327: TTL

 LGR-5329: Industrial

Input characteristics  LGR-5325/5327: 47 kΩ pull-down resistor, 39.2 kΩ series resistor

 LGR-5329: Resistor divider 39.2 kΩ series resistor and 10 kΩ shunt resistor

connected to IGND

Isolation (LGR-5329 only) 500 VDC min (Note 6)

Maximum input voltage level  LGR-5325/5327: 32 V (power on/off)

 LGR-5329: 36 V (power on/off)

Minimum high-level input

voltage threshold

 LGR-5325/5327: 2.0 V max

 LGR-5329: 10.04 V max

Maximum low-level input

voltage threshold

 LGR-5325/5327: 0.8 V min

 LGR-5329: 3.85 V min

Event logging (LGR-5327/5329

only)

Change of state, pattern recognition. Event time stamped using real time clock.

Note 5: The digital inputs are electrically isolated from the analog and digital I/O circuitry. The IGND (isolated

ground) pins should be used as the ground return for the digital inputs.

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