PRODUCT
Current Loop Communication Expansion Kit
(For LE-3500XR/2500XR/
LE-3500R/2500R/1500R)
(For LE-3500XR/2500XR/
LE-3500R/2500R/1500R)
OP-SB1C
Specification
| Applicable Analyzer | LE-3500XR/LE-2500XR/LE-3500R/LE-2500R/LE-1500R |
|---|---|
| Interface | Current loop communications (4-pole terminal block) |
| Measurement signal | SD, RD |
| Baud rate | 38.4 Kbps max.*1 |
| Communications test function | Monitor, Simulation, BERT |
| Send/Receive circuit | Receive side: Photodiode with reverse connection protection diode *2 Transmission side: Phototransistor with reverse connection protection diode *2 Max. permissible current: 60mA, Max. permissible voltage: 40V |
| Monitor current level | 10 to 60mA (10 to 40mA is recommended.) |
| Circuit method | Passive or active can be selected.*3 |
| Power supply | Supplied from built-in constant current source when the active circuit is selected. Selectable current supplies are 20mA or 40mA.*3 |
| Signal polarity | Normal (receives when current is on) / inversion (receives when current is off) can be selected *4 |
| Analog waveform analysis | The status of the current loop communication can be displayed in digital waveform. Sampling: 1ms to 50ns cycle(in 14 steps) |
| Composition | Dedicated expansion board, current loop adapter*5, Relay cable [length: 800 mm] |
*1: The maximum speed may be limited depending on the cable length and current value. (The maximum speed of the ones shipped before July 2020 is 19.2 kbps)
*2: No current limiting resistor is built-in. When supplying the communication circuit current from an external voltage source, be sure to attach an external resistor so that the maximum permissible current is not exceeded.
*3: Selected by the dip switch of current loop adapter.
*4: Specified by the setting of analyzer.
*5: The current loop adapter and relay cable set "OP-1C" are also sold separately. If you have a OP-SB5GL, it becomes an equivalent set in combination with OP-1C.