Service manual

11713A Operating and Service Manual 5-3
Local Operation
Local Control
Figure 5-l Front Panel Features
[1] ATTENUATOR X [4] LOCAL
In the local mode, pushbutton switches 1,
2, 3, and 4 activate solid state switches
(current sinks) to change the attenuation
setting of an attenuator connected to the
ATTEN X connector on the rear panel.
Pushbutton switch that resets to
the local mode when not in local
lockout. LED turns on in LOCAL
mode.
[2] ATTENUATOR Y
In the local mode, pushbutton switches 5,
6, 7, and 8 activate solid state switches
(current sinks) to change the attenuation
setting of an attenuator connected to the
ATTEN Y connector on the rear panel.
[5] REMOTE LED
When on, the remote LED indicates
that the driver is in remote control.
[6]
LINE ON LED When on, this
LED indicates that power is
applied to the attenuator/switch
drives.
[7] LINE OFF/ON
The line off/on button controls
primary power
[3] S9 A,B
In the local mode, Pushbutton switches 9
and 0 change the position of a coaxial
switch connected to rear panel banana
jacks S9 A, B and S0 A, B respective y.