DATA PROOF 160A, Operating Instructions And Service Manual

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1-2
1.2 SPECIFICATIONS
NUMBER OF INPUTS
16 for Model 160A, 164A
32 for Model 320A
THERMOELECTRIC POTENTIALS **
20 nanovolts typical, 50 nanovolts maximum
SYSTEMATIC ERROR CONTRIBUTION FOR VOLTAGE COMPARISON **
Standard deviation less than 20 nanovolts
ENVIRONMENTAL LIMITS
Operating: 10
o
C to 40
o
C up to 80% relative humidity
Storage: -20
o
C to 65
o
C up to 95% relative humidity
** Note: Specifications apply only if temperature is stable within 1
o
C, free of drafts
and the relative humidity is below 70%. Warm scanner up for 2 hours min.
Measurement using the NIST 4x4 design with inputs properly shorted. (See NIST
Technical Note 430.)
SCANNER CONTROL
Local, using front panel push buttons
Remote, via IEEE-488 bus (interface included)
RELAY CONTACT RATINGS
Life: greater than 10,000,000 cycles at low levels
Initial contact resistance: 0.05 ohm maximum
Current: 100 milliamp maximum at 10 volts
Voltage switched: 100 volts maximum at 1 milliamp
Voltage non-switched*: 300 volts max. for cable inputs
Voltage non-switched*: 600 volts max. for terminal inputs
*CAUTION - reduce voltage before actuating relays.
NOTE: when applied voltage is above 30 volts, the current source must limit the
current to less than 2 milliamps to meet IEC 1010-1/EN61010-1 safety requirements.
SIZE
Length: 420 mm (16.5 in.)
Width: 451 mm (17.7 in.)
Height: 133 mm (5.2 in.)
WEIGHT
16 channel scanner: 10 kg (23 lb.)
32 channel scanner: 12 kg (27 lb.)
LINE POWER
100V, 115V-127V, 220V-230V, 240V all
±
10%; 50-60 Hz