Keithley 7056

The Keithley 7056 is a 10-channel scanner card with electrical connection made through a quick disconnect screw terminal card (Model 7055). It is a cost-effective and versatile solution to relay switching applications. Each channel of the card has two Form A (SPNO) contacts. The switch can be wired for either 2-pole or 1-pole switching through the selection of the appropriate output. In 1-pole operation, channels HI and LO operate as independent, isolated inputs, thereby effectively doubling the number of input channels. In 20 channel mode, use as a one of 20 channel selector switch.

CHANNELS PER CARD:

10 in 2-pole mode, 20 in 1-pole mode.

CONTACT CONFIGURATION:

2-pole Form A; includes quick disconnect card. HI or LO switched to a separate output for 1- pole mode. Common guard connection.

CONNECTOR TYPE:

Screw terminal, #18AWG maximum wire size. Terminals mounted on quick disconnect portion of 7056.

RELAY DRIVE CURRENT:

24mA per relay typical.

MAXIMUM SIGNAL LEVEL:

150V, 250mA, 10VA (resistive load only).

CONTACT LIFE:

>108 closures cold switching; >107 closures at maximum signal levels.

CONTACT RESISTANCE:

<2O to rated life.

CONTACT POTENTIAL:

<100 µV per contact pair input to output with copper leads (<50 µV typical).

ACTUATION TIME:

<2ms, exclusive of mainframe.

CHANNEL ISOLATION:

>109O,

INPUT ISOLATION, DIFFERENTIAL:

>109O,

INPUT ISOLATION, COMMON MODE:

>109O,

COMMON MODE VOLTAGE:

150V peak.

CHANNEL CROSSTALK:

O load.

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