DR + GPS
STARTER KIT REFERENCE MANUAL
Lassen DR + GPS Reference Manual 128

Table 99: Tachometer

Characteristic Min. Typical Max. Unit
Voltage input 12.0 V
Frequency 3000 Hz
Data I/O
The DR+GPS Module supports the following characteristics:
๎‚ƒ CMOS/TTL levels on TXD and RXD
๎‚ƒ Fixed UART baud rates

Table 100: Data I/O

Characteristic Conditions Min. Typical Max. Unit
Data rate NMEA and
HIPPO
+/- 3% error rate
38.4 kbps
Input voltage
low level at 50 uA
high level at 50 uA
2.0
0.8 V
Output voltage
low level at 4 mA at Supply Voltage
high level at 4 mA at Supply Voltage
2.4
0.4 V
Input current
low level
high level
-50
-50
50
50
ยตA
Data latency after PPS
Delta between PPS and packet
transmission
100 ms