Specifications

16
Curtis 1310 Manual, Rev. B
Analog outputs
Two signals provide low power analog outputs. These outputs are generated
from filtered PWM signals and have about 1% ripple. The settling time (within
2% of final output) is about 30 ms for a 0–10V step. The Analog Outputs are
protected against shorts to B+ or B-.
During a FLASH software download, the DAC output voltages will float
up and can reach as high as 10 volts. Make sure that your vehicle system is safe
and can tolerate this event.
If the battery system droops below 20 volts, the DAC outputs will not
reach the 10V output specification and will start dropping as the battery volt
-
age drops below 20 volts.
2 — INSTALLATION & WIRING: I/O Signal Specifications
Power
Group A: These signals provide power for the various sensors and communication
systems that might be connected to the 1310. The PWR signal is normally only
used for powering the 1311 handheld programmer or the Curtis 840 Spyglass,
but can be used to power other small sensors or electronics. These three power
supply signals are current limited. The limited supply current can be split between
these power pins as long as the combined total does not exceed 200 mA.
POWER SPECIFICATIONS: Group A
OUTPUT
OUTPUT ESD
SIGNAL NAME PIN VOLTAGE
CURRENT TOLERANCE
+5 Volts J4-15 5 V ±5% 200 mA max
*
± 8 kV (air discharge)
CAN +5V J2-4 5 V ±5% 200 mA max
*
± 8 kV (air discharge)
PWR (Serial Port) J3-4 13.75 V ±5% 200 mA max
*
± 8 kV (air discharge)
*
The combined current of +5 Volts, CAN +5V, and PWR cannot exceed 200 mA.
ANALOG OUTPUT SPECIFICATIONS
OUTPUT
OUTPUT PROTECTED ESD
SIGNAL NAME PIN VOLTAGE
IMPEDANCE VOLTAGE TOLERANCE
Analog Output 1–2 J4-11 0 to 10 V about 33 kΩ - 1 V to 124 V ± 8 kV
& J4-12 (air discharge)
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C A U T I O N