EXFO PM-1600 High-Speed Power Meter - Manual (Page 74)

Performing Typical Tests with Your PM-1600
64 PM-1600
Using the External Trigger
Connecting a TTL Source to the External Trigger
A synchronizing signal from a signal generator or from a control circuit may
be connected to the external trigger input of the PM-1600 if it does not
exceed TTL levels. The illustration below displays a typical signal generator
connection setup.
External Trigger and Data Acquisition
To prepare an externally triggered acquisition,
1. Make sure a sampling rate from 512 Hz to 4096 Hz and a manual power
range are selected.
2. Follow the instructions in Programming Triggered Acquisitions on
page 49.
3. When you enable the externally triggered acquisition with Start
Program, the acquisition will wait for the voltage transition to occur
before storing the data in memory. If a delay was set, the acquisition
will first wait until the countdown has expired and then until the trigger
condition is met.
4.000 000 000n GHz
6.00 dBm
Optical power input
DUT
(e.-o. component)
HIGH-SPEED POWER METER PM-1600
dB W/W
ENTER
dBm/W Ref
Null
Chan
Range λ Avg Shift
Store
Recall
Program
Setup
Analog OutC1 C2 Ext. Trig Display
PM-1600
Signal generator External trigger input
Optical input Optical output
Performing Typical Tests with Your PM-1600
64 PM-1600
Using the External Trigger
Connecting a TTL Source to the External Trigger
A synchronizing signal from a signal generator or from a control circuit may
be connected to the external trigger input of the PM-1600 if it does not
exceed TTL levels. The illustration below displays a typical signal generator
connection setup.
External Trigger and Data Acquisition
To prepare an externally triggered acquisition,
1. Make sure a sampling rate from 512 Hz to 4096 Hz and a manual power
range are selected.
2. Follow the instructions in Programming Triggered Acquisitions on
page 49.
3. When you enable the externally triggered acquisition with Start
Program, the acquisition will wait for the voltage transition to occur
before storing the data in memory. If a delay was set, the acquisition
will first wait until the countdown has expired and then until the trigger
condition is met.
4.000 000 000n GHz
6.00 dBm
Optical power input
DUT
(e.-o. component)
HIGH-SPEED POWER METER PM-1600
dB W/W
ENTER
dBm/W Ref
Null
Chan
Range λ Avg Shift
Store
Recall
Program
Setup
Analog OutC1 C2 Ext. Trig Display
PM-1600
Signal generator External trigger input
Optical input Optical output