8163A/B, 8164A/B, 8166A/B User’s Guide
157
Tunable Lasers
5
Figure 90
External Digital Modulation
on page -157 shows how a TTL-level input signal modulates the
optical output. Digital modulation sets the frequency of the output signal.
To set the amplitude of the output signal, set the power parameter. This is
the maximum output power of the output signal; at the minimum output
power, no power is output.
To enable external digital modulation:
1 Move to the Tunable Laser channel and press [Details].
2 Move to [
Mod
Src
] and press
Enter
.
3 Move to <
External
Digital
> by using the cursor key, and press
Enter.
The text
ExtD
appears in the Tunable Laser channel.
External Analog Modulation
External analog modulation uses a signal of up to 5 V
pp
. A 5 V
pp
signal
causes 15% modulation of the power of the optical signal. Apply this signal
to the input BNC connector on the front panel of your Tunable Laser
module.
t
TTL-level Input Signal
Input
Voltage
Output
Power
Optical
t
Optical Output Signal
CAUTION
There are two BNC connectors on the front panel of the 814xxB, 816xxB
and 8160xA tunable laser modules, a BNC input connector and a BNC
output connector.
There is one BNC connector on the front panel of the 81689A and
819xxA compact tunable laser modules, a BNC input connector.
An absolute maximum of ±6 V can be applied as an external voltage to
any BNC connector.
Summary of Contents for 8163A
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Page 86: ...8163A B 8164A B 8166A B User s Guide 85 Additional Information 2 Figure 47 MAC Address...
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Page 298: ...8163A B 8164A B 8166A B User s Guide 297 Applications 10 Figure 183 Low Dynamic Range...
Page 310: ...8163A B 8164A B 8166A B User s Guide 309 Applications 10 Figure 190 Printed Results...
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