Keysight Technologies L4490A, User Manual

Page: 143 / 160

Keysight L4490A/L4491A User’s Guide 143
Additional Operating Information
As shown, Channel 01 was pulsed to close Port 1. The corresponding position
indicator also closed.
The schematic shown is similar to the Keysight 876x series of switches and 849x
series of step attenuators.
Figure 5-5. Dual-Coil Switch Connection Diagram (combined position
indicators).
Pulsed Actuation Mode
The pulsed actuation mode is set during a bank preset. Pulsed mode can also be
set with the command:
ROUTe:CHANnel:DRIVe:PULSe:MODE ON
It is also set when channels are paired either through a bank preset or with the
command:
ROUTe:CHANnel:DRIVe:PAIRed:MODE ON
34945EXT
Y1155A
Distribution
Board
Switch
Open Collector
Output Drivers
Logic Gate
Sense
Pull Down
Resistor
Sense
Pull Down
Resistor
Logic Gate
IND 11
+VR
IND 1
+VI
DRV 1
DRV 11
Drive Port 2 –
Drive
Drive Port 1 –
Pivot
Armature
Port 1 Port C Port 2