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Card Configuration-schematic - Keithley 7711 User Manual

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Model 7711/7712
7712-SMA-1
7712-SMA-N
S46-SMA-1
S46-SMA-0.5
Card configuration—schematic
Figure 1
shows a simplified schematic diagram of the Model 7711/7712 module. As shown, the Model 7711/7712 has channels
that are grouped into dual 1 × 4 multiplexers. The multiplexer's design allows 1 channel of each set of 4 to be closed at a time
(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
Simplified schematic for Model 7711/7712
Ch1
Ch2
OUT A
Ch3
Ch4
Ch5
Ch6
OUT B
Ch7
Ch8
NOTE
To close channels 1 and 5 on a Model 7711/7712 in slot 1, send: :ROUT:MULT:CLOS
(@101,105)
The channels are controlled over the bus or from the front panel. The grounds for these channels are non-isolated. Detailed
connection information is contained later in this guide. By using the ROUT:MULT commands (refer to Section 2 of the
Model 27xx User's Manual), they can be manually configured.
SMA cable, male to male, flexible, low loss, 1m (3.3ft)
(Insertion loss < 0.65dB @ 2GHz, VSWR < 1.11 @2GHz)
Female SMA to Male N-Type Adapter
SMA cable, male to male, 0.3m (1ft)
SMA cable, male to male, 0.15m (0.5ft)
Figure 1
for a schematic).
3

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