Computation Of Duty Cycle And On Time - RoyalTek REB-3000 Operational Manual

RoyalTek RGM-3000/REB-3000
GPS Module Operational Manual)
following example: Sets the receiver into
low power Modes. Example: Set receiver
into Trickle Power at 1 hz update and 200
ms On Time.
A0A20009—Start Sequence and Payload
Table 38 Set Trickle Power Parameters I.D. 151
Name Bytes
Message ID
Push To FixMode
Duty Cycle
Milli Seconds On
Time
Payload Length: 9bytes.
Computation of Duty Cycle and On
Time.
The Duty Cycle is the desired time to be
spent tracking.The On Time is the duration
of each tracking period (range is 200 - 900
ms). To calculate the TricklePower update
rate as a function of Duty cycle and On
Table 39 Example of selections for Trickle Power Mode of Operation
Mode
Continuous
Trickle Power
Trickle Power
Trickle Power
Trickle power
See Table 40 for supported/unsupported settings.
Table 40 Trickle Power Mode Settings
On
Time
(ms)
200
300
400
500
600
700
800
900
Y = Yes (Mode supported)
N = No (Mode NOT supported)
Binary(Hex)
Scale Example
1 97
2 0000
2 *10 00C8
4 000000C8
On Time (ms)
1000
200
200
300
500
1 2 3
Y Y N
Y Y Y
Y Y Y
Y Y Y
Y Y Y
Y Y Y
Y Y Y
Y Y Y
Length
97000000C8000000C8—Payload
0227B0B3—Message Checksum and End
Sequence
Units
%
ms
Time, use the following formula:
Off Time = (On Time - (Duty Cycle * On
Time)) / Duty Cycle
Update rate = Off Time + On Time
Note – On Time inputs of > 900 ms will
default to 1000 ms
Following are some examples of
selections:
Duty Cycle (%)
100
20
10
10
5
Update Rate (second)
4 5
N N
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
29
Description
ASCII 151
ON=1, OFF=0
% Time on
Range 200 ~ 500 ms
Update rate (1/Hz)
1
1
2
3
10
6 7
N N
Y N
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
8
N
N
Y
Y
Y
Y
Y
Y