18
Keysight 87406Q Operating and Service Manual
2
Switch Configuration
Electronic Position Indicators
The electronic position indicators consist of optically isolated, solid
state relays which are driven by photo- electric sensors coupled to
the mechanical position of the RF path’s moving elements (see
Figure 2- 2
). The circuitry consists of a common which can be
connected to an output corresponding to each RF path. If multiple
RF paths are engaged, the position indicator corresponding to each
closed RF path will be connected to common. The solid state
relays are configured for AC and/or DC operation. See
“Environmental specifications” on page 24
. The electronic position
indicators require that the supply (20 to 32 VDC) be connected to
pin 1 and ground connected to pin 15.
Figure 2-2
Pin configuration for indicator function
