Keithley 6521, Instruction Manual, Page: 8 / 65

CHANNELS PER CARD: 10.
FUNCTIONS: Volts, Amps.
CONTACT CONFIGURATION:
Voltage Mode: Single pole break-before-make for signal HI input. Guard
is common for all 10 channels and output.
Current Mode: Single pole break-before-make for signal HI input. Signal
LO is common for all 10 channels and output. When a channel is off,
signal HI input is connected to signal LO via a relay. All channels con-
nect to signal LO in a make-before-break configuration between
channel closures so that the current path is never interrupted.
All relays open when power is off.
SCAN SPEED:
1.5 channels/second with default settings. 1, 2
43 channels/second maximum speed. 1, 2, 3
1 When used with 6517 Electrometer.
2
Scan speeds are for fixed range readings for 200V and 20mA 6517
ranges, into data buffer.
3 6517 Filter off, speed fast, settling time 0 seconds.
CONNECTOR TYPE: Inputs: Triaxial. Outputs: Triaxial.
SIGNAL LEVEL: 200V, 500mA, 10VA (resistive load).
CONTACT LIFE: >10 6
closures at maximum signal level; >10
7
closures at
low signal levels.
CONTACT RESISTANCE: <1
Ω
.
CONTACT POTENTIAL: <200µV.
OFFSET CURRENT: <1pA (<30fA typical at 23°C, <60% RH).
CHANNEL ISOLATION: > 10 13
Ω
, <0.3pF.
INPUT ISOLATION: >10 10
Ω
, <125pF (Input HI to Input LO).
ACTUATION TIME: 2ms.
COMMON MODE VOLTAGE: <250V peak.
ENVIRONMENT:
Operating: 0°C to 50°C up to 35°C at 70% RH.
Storage: –25°C to 65°C.
DIMENSIONS,WEIGHT: 38mm high
×
70mm wide
×
242mm deep (1.5 in
×
2.75 in
×
9.5 in). Net weight 623g (22 oz).
Specifications are subject to change without notice.
OUT
H
L
H
L
IN 1
H
L
IN 10
IN 2...9
G
G
G
Model 6522 Low Current/Voltage Scanner