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5.7.3.5 SELECTING THE BINARY INPUT CURRENT
The input threshold for detecting a logic 1 can be set at either 8uA or 20mA using a jumper on the
module board. When jumper J4 is shorted, the threshold current level is 20 mA. When jumper J4 is
not shorted, the threshold current level is
8μA.
A threshold current value of 20mA has a higher
resistance to noise on the input but also dissipates more power.
Fig. 32: CNT I/O board
Summary of Contents for Spectre
Page 1: ...1 SPECTRE Router USER MANUAL ...
Page 16: ...16 3 5 DIMENSIONS Basic dimensions metal box Fig 2 Basic dimensions metal box ...
Page 20: ...20 Fig 7 Removing the router ...
Page 22: ...22 Fig 9 Front panel SPECTRE with Wi Fi ...
Page 32: ...32 Fig 23 Jumper Position for external power supply Fig 24 Jumper position for RS 485 ...
Page 33: ...33 Fig 25 Jumper position for internal power supply Fig 26 Jumper position for RS 422 ...