Users manual
N4430-O-G
Revision #:
B
Date:
8-23-18
Page
36
of
74
PPS
–
Setting of PPS
（
Pulse per second
）
△
4 Format:
1
2
3
4
5
6
polarity [, PPS accuracy threshold] *hh <CR
>
<LF>
7
8
Num
Contents
Range
Default
Remark
1
PPS
-
-
Command Name
2
type
LEGACY
GCLK
LEGACY PPS type
3
mode
0 to 4
4
PPS mode
0: Always stop
1: Always output
2: Output only during positioning more than one
satellite
3: Output only when TRAIM is OK
4: Output only when estimated accuracy is less than
estimated accuracy threshold which is 8th field on
this command.
4
period
0 to 1
0
PPS output interval
0: 1PPS (A pulse is output per second)
1: PP2S (A pulse is output per two seconds)
5
pulse width
1 to 500
200
PPS pulse width (ms)
6
cable delay
-100000 to
100000
0
PPS cable delay (ns)
Plus brings delay PPS.
Minus brings forward PPS.
7
polarity
0 to 1
0
PPS polarity (LEGACY PPS is rising edge only)
0 : rising edge
1 : falling edge
8
PPS
accuracy
threshold
5 to 9999
1000
PPS estimated accuracy threshold
This threshold is used for mode 4.
△
4
Example:
$PERDAPI,PPS,LEGACY,1,0,200,0,0,25*29
Type: LEGACY PPS
Mode: Always output
1PPS Pulse width: 200 ms
cable delay: 0 ns
Polarity: rising edge of PPS is synchronous with UTC time.
PPS estimated accuracy threshold is 25nsec.
$PERDAPI , PPS , type , mode , period , pulse width , cable delay ,
