EndRun Sonoma N12, User Manual

Page: 109 / 174

S o n o m a U s e r M a n u a l 92
C H A P T E R T E N
93 S o n o m a U s e r M a n u a l
O P T I O N S
Programmable Pulse Output (PPO)
The PPO Option provides user-selectable, on-time pulse rates from 1 PPS to 10 MPPS. Other selec-
tions are 1PP60S (pulse per 60 seconds, on the minute), 1PP2S (pulse per 2 seconds, on the even
second), and Inverted 1PPS (falling edge on-time). For details on signal definition see Appendix H
- Specifications .
View and Change the PPO Configuration
Use the
cpuio
command to view the optional outputs on the CPU Module. This command will list
any connector that has an optional I/O signal. Connectors are identified as A, B or C. To change the
PPO selection use the
cpuioconfig
command.
Command:
cpuio
Sonoma reply:
PROGRAMMABLE PULSE OUTPUT is Installed
Current Setting = OFF
Command:
cpuioconfig
Sonoma reply: Interactive script is started so you can change the pulse rate.
1PPS Output
This output provides 1PPS signal. There are several variations of the 1PPS Output signal such as:
1PPS TTL, 1PPS (RS-422), and Inverted 1PPS. The Programmable Pulse Output also has a 1PPS
selection.
The 1PPS is a “system signal”. This means that there is one 1PPS signal that affects the whole sys-
tem. In other words, if your Sonoma has multiple 1PPS outputs and you change the pulse width, then
all 1PPS outputs will be affected.
The pulse width is normally 1 millisecond wide when shipped from the factory but can be changed
(see below). For details on the 1PPS signal definition see
Appendix H - Specifications
.
View and Change the 1PPS Configuration
Use the
cpuio
command to view the optional outputs on the CPU Module. This command will list
any connector that has an optional I/O signal. Connectors are identified as A, B or C. Use the
sys-
temio
command to view the 1PPS pulse width setting.
Command:
cpuio
Sonoma reply:
CPU I/O B - 1 PPS OUTPUT is Installed
Current Setting = (See systemio command)
Command:
systemio
Sonoma reply:
System I/O Signal 1 PPS OUTPUT is Installed
Current Setting = 1 Milliseconds Pulse Width
Use the
systemioconfig
command to change the 1PPS pulse width. You will be able to choose
from among these selections: 20 microseconds, 1 millisecond, 100 milliseconds and 500 millisec-
onds.