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Connecting a ttl source to the external trigger, External trigger and data acquisition, Performing typical tests with your pm-1600 – EXFO PM-1600 High-Speed Power Meter User Manual

Page 74: Using the external trigger, Optical power input dut (e.-o. component), Pm-1600

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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