User`s guide

4000 & 5000 Series User’s Guide

2.3.2 I/O Specifications

The modem has 4 digital inputs, 3 analog inputs and 3 digital outputs for remote control and

monitoring. The third digital output (O3) is located on the power connector for all modems.

The third analog input (AI3) is not available on the 4200/5200 models.

AI2 GND

AI1 AI3

O2 DI2

O1 DI1

DI4

DI3

Figure 2 – I/Os (Looking at back of modem)

3x Digital Outputs (O1, O2, O3) – O3 available on Power connector

Configuration Open Collector, reference to ground

Absolute Maximum IDC 500mADC (Vce = 750mVDC)

Absolute Maximum VDC 30VDC (open circuit)

Absolute Minimum VDC 0.4VDC (open circuit)

4x Digital Inputs (DI1, DI2, DI3, DI4)

Configuration Non-isolated level detection, reference to ground

Active level 1.6VDC to 30VDC

Inactive level 0VDC to 1.3VDC

Absolute Minimum VDC 0.3VDC

Absolute Maximum VDC 33VDC

Leakage IDC at 5VDC 150uADC

3x Analog Inputs (AI1, AI2, AI3) – AI3 only available on 4600/5600

Configuration Not isolated input, reference to ground

Resolution 1024 (ADC 10-bit)

VDC per step 4.8875855mVDC

Full scale level 5VDC

Zero level 0VDC

Absolute Minimum VDC -0.3VDC

Absolute Maximum VDC 8.3VDC

Leakage IDC at 5VDC 265.96 uADC TYPE

Table 4