1. Product Feature
Digital Roll and Pitch Output
RS-232 Interface
Programmable Resolution and Settling Time
2. Product Applications
Platform Leveling
Precision Tilt Measurements
Geo-mechanical Leveling
Lab Instrumentation
3. Specifications
|
Specifications
|
LE-60-F
|
Remarks
|
|
Performance
|
|
Accuracy (°)
|
± 0.1
|
at ± 20° (at 25°C)
|
|
Angular Range (°)
|
± 75
|
From horizontal
|
|
Angular Drift w/Temp (°)
|
0.7
|
Up to ± 20° Tilt
|
|
Angular Resolution (°)
|
See Table 1
|
|
|
Null Angular Offset (°)
|
< 0.5
|
Actual value provided w/sensor
|
|
Non-Linearity (± 45°) (%)
|
< 0.3
|
Measured at 25O C
|
|
Transverse Sensitivity (%)
|
1
|
Typical
|
|
Environment
|
|
Temperature Range (°C)
|
-40 to +85
|
|
|
Electrical
|
|
RS-232 Interface (Baud)
|
9600
|
|
|
Supply Voltage (Volts DC)
|
8-30
|
|
|
Supply Current (mA)
|
60
|
|
|
Physical
|
|
Size
|
4.02 x 2.26 x 1.24” (10.21 x 5.74 x 3.15 cm)
|
|
Weight
|
2.9 oz (90 gm)
|
|
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Cable Length (feet)
|
2.5
|
|
| |
|
|
|
Specifications subject to change without notice
Table 1
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Filter
|
Fc(Hz)
|
Tc(s)
|
Typical Resolution (o)
|
|
0
|
none
|
none
|
0.320
|
|
1
|
12.5
|
0.025
|
0.101
|
|
2
|
9.9
|
0.029
|
0.091
|
|
3
|
5.0
|
0.042
|
0.064
|
|
4
|
2.5
|
0.074
|
0.045
|
|
5
|
1.2
|
0.14
|
0.032
|
|
6
|
0.64
|
0.26
|
0.023
|
|
7
|
0.33
|
0.52
|
0.016
|
|
8
|
0.17
|
1.03
|
0.012
|
|
9
|
0.09
|
2.05
|
0.009
|
Note:
Filter 0 implies no digital IIR filter, but there is a 125 Hz ± 35 Hz single pole response
from the MEMS sensor
4. Application Information
|
Command
|
Function Description/Response
|
|
R
|
Reset. Resets the LE-60-F firmware to default settings.
An ASCII ‘H’ (72) is sent in response.
|
|
G
|
Get Angle Data Packet. The LE-60-F returns its current angular position. The data is in a 6 byte packet defined in Table 2
|
|
N<0-9>
|
Set Resolution Level. A 2 byte command sequence that configures the LE-60-F internal digital filter. The second byte, an integer of value 0-9, sets the level of filtering.
|
|
C
|
Continuous Mode: Transfers packet continuously at maximum rate.
|
|
S
|
Stop Continuous Mode
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Table 2
|
Contents of Data Packet
|
|
Byte
|
Description
|
Note: Angles are represented as two’s
complement 16 bit numbers. +90° corresponds to 32,767. -90°corresponds to -32,768. The 16-bit signed angle can be obtained by this simple ‘C’ expression: (int) Roll LSB + (int) 256 * Roll MSB
|
|
0
|
Header (always 255)
|
|
1
|
Pitch MSB (0-255)
|
|
2
|
Pitch LSB (0-255)
|
|
3
|
Roll MSB (0-255)
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|
4
|
Roll LSB (0-255)
|
|
5
|
Checksum (8-bit sum of bytes 1-4)
|
5. Pin Diagram
|
Pin
|
Function
|
|
4
|
Transmit Data
|
|
3
|
Receive Data
|
|
1
|
GND
|
|
11
|
Input Power
|
