Keithley 7057A Instruction Manual page 6

Thermocouple scanner card
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SPECIFICATIONS
CHANNELS
PER CARD: 9 plus temperature reference.
CONTACT
CONFIGURATION:
2 Pole Form A with common guard.
CONNECTOR
TYPE: Screw terminals in isothermal
block, No. 18 AWG wire
maximum.
RELAY DRIVE CURRENT:
12mA lper relay).
TEMPERATURE
OFFSET: i0.05°C
maximum from HI to LO of any input or be-
tween any two adjacent channels in one column on the isothermal block. * O.lOC
maximum between an
two ferminals on the isothermal block. Maximum addi-
tional dynamic offset J ue fo 10°C step chsngo in environment:
*O.l°C
after one
hour settling.
TEMPERATURE
REFERENCE: Thermistor in a linearized bridge.
REFERENCE OUTPUT:
- ,m",°C,
,Om" at +3O"CI.
REFERENCE ACCURACY:
f0.2S°C
,,O'=C to 35OC,, +0.5OC
,O"C to 10% and 35°C to 60°Cl.
WARM
UP TIME:
1 Hour to rated accuracy.
CONTACT
OFFSET VOLTAGE:
I,,".
ACTUATION
TIME:
< 5ms, exclusive of mainframe.
CONTACT
LIFE: > lo* cbs"res.
CONTACT
RESISTANCE:
< 2n (<O.,O inidall.
C"ANNEL
ISOLATION:
'109O.
1OpF.
INPUT ISOLATION:
a 10'R. 15OpF.
COMMON
MODE VOLTAGE:
200" peak.
ENVIRONMENT,
SPECIFIED:
,O'=C to 35°C. up to 70% R.H.
ENWRONMENTAL,
OPERATING:
O°C to 50°C, up to 35OC at 70% R.H.
ENVIRONMENTAL.
STORAGE:
-25OC to +55"C.
DIMENSIONS,
WEIGHT:
32mm high x 114mm wide x 272mm long I1 %*' x
4%"~
10%") net weight 0.54kg Illb. 5,502.).
Signaf Level: 42".
1DDmA. 2VA maximum
Inon-inductive
load only).

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