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7075
• Low cost
• <5µV voltage offset
• <100pA offset current
• 110V, 1A signal levels
• Uses standard 25-pin
D connectors
• Compatible with Models 707A
and 708A
Use with Models 707A and 708A switching matrix mainframes
Ordering Information
7075 Eight 1×12 Two-po le
Multiplexer Card
Two-pole Multiplexer Card
Eight 1×12
The Model 7075 is a general pur pose multiplex switching card that consists of eight banks of independent 112 mul ti plex er switching. Each bank
has two switched circuits (HI and GUARD). The row is connected through
jumpers on the card to the general purpose analog backplane in the
Model 707A or 708A switching main frame. This provides the inter con nect
between cards for multiplexer expansion (124, 136, etc.). Jumpers may
be removed to isolate any bank. A single card can be ex pand ed to 196 by
re con fig ur ing the supplied bank-to-bank jumpers. Eight 25-pin D con nectors are provided for bank con nec tions and one for row connection.
MULTIPLEX CONFIGURATION: Eight 1×12 banks. Adjacent
banks can be connected together. Jumpers can be removed to
isolate any bank from the backplane.
CONTACT CONFIGURATION: 2-pole Form A (HI, GUARD).
CONNECTOR TYPE: 25-pin subminiature D connector, eight
for bank connection, one for row connection.
MAXIMUM SIGNAL LEVEL:
DC Signals: 110V DC pin-to-pin, 1A switched, 30VA (resistive
load).
AC Signals: 175V AC peak pin-to-pin, 1A switched, 60VA (resis-
tive load).
COMMON MODE VOLTAGE: 110V DC, 175V AC peak pin-to-pin
or pin-to-chassis.
CONTACT LIFE:
Cold Switching: 10
At Maximum Signal Level: 105 closures.
CHANNEL RESISTANCE (per conductor): <0.50Ω initial,
<1.5Ω at end of contact life.
8
closures.
CONTACT POTENTIAL: <5µV per contact pair (HI to GUARD).
OFFSET CURRENT: <100pA.
CROSSTALK (1MHz, 50Ω load): Bank: <–60dB.
Channel: <–60dB.
INSERTION LOSS (1MHz, 50Ω source, 50Ω load): 0.1dB
typical.
ISOLATION:
Bank: >10
Channel: >1010Ω, <5pF.
Differential: Configured as 1×12: >10
Configured as 1×96: >108Ω, <600pF nominal.
Common Mode: Configured as 1×12: >109Ω, <165pF nom i nal.
Configured as 1×96: >108Ω, <700pF nominal.
3dB BANDWIDTH (50Ω load):
Configured as 1×12: 30MHz typical.
Configured as 1×96: 2.5MHz typical.
RELAY SETTLING TIME: <3ms.
10
Ω, <3pF.
9
Ω, <100pF nominal.
Use with Models 707A and 708A switching matrix mainframes
Accessories Supplied
Jumpers for multiplexer expansion
ACCESSORIES AVAILABLE
7076-RMTC High Isolation Row Cable A ssembly, 3m (10 ft)
7076-CMTC High Isolation Column/Bank Cable A ssembly,
7075-MTC Row/Column/Bank Standard Cable Assembly,
3m (10 ft)
3m (10 ft)
SERVICES AVAILABLE
7075-3Y-EW 1-year factory warranty extended to 3 years
1.888.KEITHLEY
from date of shipment
(U.S. only)
www.keithley.com
ROWS
(To rear
panel
connectors)
123456789101112
BANKS—Eight 1 x 12 (To rear panel connectors)
A
B
C
D
E
F
G
H
Backplane Jumpers (factory installed)
A GREATER ME ASURE OF C ONFIDENC E
Bank-to-
Bank
Jumpers
(user
installable)
SWITCHING AND CONTROL
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