viii L4400 User’s Guide
6 L4437A General Purpose Switch
General Purpose Switch Instrument 130
L4437A SCPI Command Summary 132
L4437A Example Program Segments 133
L4437A 32-Channel General Purpose Switch Hardware Description 134
L4437A Simplified Schematic 134
L4437A D-Sub Connectors 135
34937T Terminal Block 136
7 Microwave Switch/Attenuator Driver
L4445A SCPI Command Summary 142
L4445A Microwave Switch/Attenuator Driver 144
Recommended Switches and Attenuators 147
Power Supplies 148
Channel Numbering 149
Simple Switch Control 150
Remote Module Identifiers 151
Drive Modes 151
Using Single Drive Switches and Attenuators 152
Using Dual Drive Switches and Attenuators 153
Using Pulse Drive 154
Long Execution Times 155
Verifying Switch State 155
LED Drive 157
Default and Reset States 158
Y1150A 161
Y1151A 165
Y1152A 170
Y1153A 175
Y1154A 180
Y1155A 185
Mounting the Remote Modules 193
SCPI Programming Examples 194