JDS Uniphase HA9 Series User Manual

Programming Guide – 71
INPut Commands
:INPut:ATTenuation
Syntax :INPut:ATTenuation <space> <numeric value> [dB]
Function Sets the total attenuation to the parameter value by changing the actual
attenuation. Because the total attenuation includes the offset, the actual
attenuation of the attenuator is set according to the following formula:
Att
actual =
Att
total
- Offset
This command also accepts the parameters MIN, MAX, and DEF. The minimum
total attenuation is the total attenuation at which the actual attenuation is 0 dB.
The maximum total attenuation is the total attenuation at which the actual
attenuation is 30 dB. The default total attenuation is the same as the minimum
attenuation.
Example
:INP:OFFS 30;INP:ATT 40 sets the total attenuation to 40 dB and the actual
attenuation to 10 dB (for example, 40 dB - 30 dB = 10 dB).
:INPut:ATTenuation?
Syntax :INPut:ATTenuation? [<space>MAX|MIN|DEF]
Function Returns the current total attenuation in dB. The total attenuation is the total of
the actual attenuation and the offset:
Att
total
= Att
actual
+ Offset
This query also accepts the parameters MIN, MAX, and DEF. The minimum,
maximum, or default value for the total attenuation at the current offset setting is
returned.
Example
:INP:ATT? MAX returns the current offset plus 100 dB (the maximum actual
attenuation of the standard HA9 unit) or 60 dB (the maximum actual attenuation
of the HA9 wide unit).
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JDS Uniphase HA9 Series Specifications

General

Brand	JDS Uniphase
Model	HA9 Series
Category	Control Unit
Language	English