KVH Industries 1775 IMU User Manual

56-0298 Rev B
This document contains proprietary information of KVH Industries, Inc. and neither this document nor said proprietary information shall be
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Page 11 of 77
4 Data Communications and Unit Control
The 1775 IMU provides a digital interface for the following functions:
 Output of sensor data and status messages including built-in test messages.
 Receipt of external commands to configure and control the IMU assembly.
 Data output control, timing, and reset functions.
4.1 Interface Connector
The 1775 IMU is equipped with a type MIL-DTL-83513 15-pin (male-pin) Micro-D interface
connector for data communications and power. Table 4-1 below describes the function of each
pin. These were also shown in Figure 3-2.
Table 4-1: Electrical Interface Signals
Pin #
Number
Pin Name
Description
Comments
1
RS422-TX+
Output: differential
positive
RS-422 serial port for primary
data output and command input;
the commands that can be sent to
the RS-422 port are listed in
Section 7.2
2
RS422-TX-
Output: differential
negative
3
RS422-RX-
Input: differential negative
4
RS422-RX+
Input: differential positive
11
MSYNC+
Input: differential positive
Master Synchronization for
external data request
(see Section 10.3)
7
MSYNC-
Input: differential negative
13
CONFIG-RST-IN+
Input: differential positive
Configuration Reset
(see Section 10.1)
6
CONFIG-RST-IN-
Input: differential negative
14
EXT-RST+
Input: differential positive
External Reset
(see Section 10.2)
5
EXT-RST-
Input: differential negative
12
TOV-OUT+
Output: differential
positive
Time Of Validity (TOV)
(See Section 11)
8
TOV-OUT-
Output: differential
negative
10
POWER +
Power positive
10-32 VDC type; (9-36 VDC max)
(see Figure 3-2)
9
POWER -
Power return and signal
ground
15
NC
Do Not Connect
For factory/future use

KVH Industries 1775 IMU Specifications

General

Brand	KVH Industries
Model	1775 IMU
Category	Measuring Instruments
Language	English