APPENDIX A IMU Technical Specifications
OEM7 SPAN Installation and Operation User Manual v14
265
Pin
Signal
Type
Description
Comments
1
GND
Chassis ground
2
GND
Chassis ground
3
15V
Output
Power
Positive 15 VDC supply
Enabled/disabled depending on the IMU type
detected
4
15V
Output
Power
Positive 15 VDC supply
Enabled/disabled depending on the IMU type
detected
5
-15V
Output
Power
Negative 15 VDC supply
Enabled/disabled depending on the IMU type
detected
6
DGND
Digital ground
Enabled/disabled depending on the IMU type
detected
7
DGND
Digital ground
Enabled/disabled depending on the IMU type
detected
8
IMU VDD
Output
Power
Positive voltage supply for
IMU logic circuits
IMU_VDD can be +3.3 VDC or +5 VDC
depending on the IMU type detected
9
IMU VDD
Output
Power
Positive voltage supply for
IMU logic circuits
10
DGND
Power
Digital ground
11
Tx Data+
Output
Serial data out+
Non-inverting
12
Tx Data-
Output
Serial data out-
Inverting
13
RX Data+
Input
Serial data in+
Non-inverting RS-422 data input
14
RX Data-
Input
Serial data in-
Inverting RS-422 data input
15
CLK+
Bidirectional
Serial data clock+
Non-inverting portion of RS-422 link
16
CLK-
Bidirectional
Serial data clock-
Inverting portion of RS-422 link
17
IMU DAS
Bidirectional
Data acquisition signal
Provides synchronization for IMU data
(LVCMOS level)
18
IMUTYPE0
Input
detect IMU type
LVCMOS level, not 5V tolerant
19
IMUTYPE1
Input
detect IMU type
LVCMOS level, not 5V tolerant
20
IMUTYPE2
Input
detect IMU type
LVCMOS level, not 5V tolerant
Table 152: Pinouts for IMU Connector (P601)
All signal I/O are at LVCMOS levels.