Installation Guide

TTU-2830™ Power and I/O leads
3.3 GPS Receiver
The TTU-2830™’s GPS receiver has the following specifications:
• 50 channel GPS receiver
• Accuracy: 2.5 meter CEP (with SA off)
• -162dBm Tracking Sensitivity
3.4 I/O Descriptions
The TTU-2830™ provides the following I/O:
Digital Inputs
• Input 0: Ignition Sense (Always biased low)
• Input 1: Generic Digital Input (high or low bias per S-158)
• Input 2: Generic Digital Input (high or low bias per S-158)
• Input 3: Not Available
• Input 4: Not Available
• Input 5: Motion Sensor (low = no motion, high = motion)
• Input 6: Power Switch State (low = external power, high = internal battery)
• Input 7: Battery Voltage Critical Sensor ( low = VBatt ok, high = VBatt low.
3500mV threshold)
• Input 8: High Temperature Sensor (low = below Temp Threshold, high = above
Temp threshold. Temp Threshold = 300)
Analog to Digital Inputs
• A/D 0: External Power Supply Monitor
• A/D 1: Generic External Analog to Digital Input