• Model 7711/7712 User’s Guide PA-818 Rev. B / 8-03 A G R E A T E R M E A S U R E O F C O N F I D E N C E.

• WARRANTY Keithley Instruments, Inc. Warrants this product to be free from defects in material and workmanship for a period of 1 year from date of shipment. Keithley Instruments, Inc. Warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable batteries, diskettes, and documentation. • Keithley products are designed for use with electrical signals that The instrument and accessories must be used in accordance with its are rated Measurement Category I and Measurement Category II, as specifications and operating instructions or the safety of the equip.

• Keithley Instru- symbol on an instrument indicates that the user should re- ments. Standard fuses, with applicable national safety approvals, fer to the operating instructions located in the manual.

• Model 7711/7712 Keithley Instruments, Inc. 28775 Aurora Road User’s Guide Cleveland, Ohio 44139 (440) 248-0400 Fax: (440) 248-6168 www.keithley.com The information in this User’s Guide is organized as follows: Introduction on page 2 • Available accessories on page 2 Card configuration — schematic on. • Applications Engineers at 1-800-KEITHLEY (U.S. And Canada only). The Model 7711/7712 is a single-pole dual 1 × 4 RF Multiplexer module (8 channels, no measurement capability).

The 1 × 4 multiplex is a cascading tree design — one of the channels of each bank is always connected to a common out. Crack Dreamscene Video Wallpaper. The 1 × 4 multiplex is also referred to as a single-pole 4-throw (SP4T) switch. • (1 of 4 tree structure). Also, channels 1 and 5 are normally closed to OUT A and OUT B, respectively. NOTE The Model 7711/7712 relays are set to close channels 1 and 5 a few seconds after either a power cycle or a *RST command is issued (see Figure 1 for a schematic).

• 1 × 12 MUX using two Model 7711 cards. Figure 3 Channels 3 and 4 (of 7711 in slot 1) may also be connected to other banks that will create a 1 × 12 NOTE multiplexer (or a 1 ×. • Figure 2 1 x 8 MUX expansion 7711 SLOT 1 OUT B OUT A 7711 SLOT 2 OUT B OUT A NOTE: The simplified schematic is shown in the power up state (Channels 1 and 5 are closed for cards in slots 1 and 2).

• 1 with a 50Ω load or an unconnected Ch8 (Ch12) S46-SMA-0.5 cable. NOTE: Channels 5-8 on the 7711/7712 To close to this crosspoint (CH11) send: in slot 1 correspond to crosspoints ROUTe:MULTiple:CLOSe(@103,107) Channels 9-12 of the 1 × 12 SP12T. • 4 × × × × 4 Blocking matrix example shows how to connect a single Model 7711 in a 4 × 4 blocking matrix.

This configuration provides a convenient way Figure 4 to connect four DUTs to four different test instruments. In this configuration, one channel of bank 1 (channels 1 – 4) may be routed to any channel of bank 2 (channels 5 –. • 7711/7712 modules. This configuration provides a convenient way to simultaneously connect up to 4 DUTs to 4 different test instruments. Use a short coaxial cable to connect the OUTs of each module as shown. Contains a couple of sample commands to control the matrix.