7154 High Voltage Scanner Card
10-Channel
CONTACT LIFE: >10
(at maximum signal level).
CONTACT RESISTANCE: <200mΩ initial, 2Ω to rated life.
CONTACT POTENTIAL: <35µV per contact pair with copper leads.
ACTUATION TIME: <2ms exclusive of mainframe.
CHANNEL ISOLATION: 10
INPUT ISOLATION: Differential: >10
Common Mode: >10
COMMON MODE VOLTAGE: 1100V peak.
ENVIRONMENT: Operating: 0° to 50° up to 35°C at 70% R.H.
Storage: –5° to +65°C.
Ch. 1
Ch. 2 - 9
Ch. 10
• 1100 volts peak
• 2-pole switching
• High and low fused
Ordering Information
7154 High Voltage
Scanner Card
The Model 7154 switches voltages to 1100V
peak or currents to 0.5A. The current carry capacity of each relay contact is 1A. Two-pole
relays switch both circuit High and Low for full
floating measurements and each input line is
fuse protected against current overload. A Guard
input common to all channels is provided for
shielding or as a Guard driven from a single instrument. Guards may be isolated by removing
jumpers installed at each input. Multiple
switched guard circuits can be achieved by removing the jumper and connecting circuit
Guard to the Low input terminal.
CHANNELS PER CARD: 10.
CONTACT CONFIGURATION: 2-pole Form A with user-selectable
shield or driven Guard. Each pole is fused using #38AWG magnet wire.
CONNECTOR TYPE: Screw terminals, #16AWG maximum wire
size.
RELAY DRIVE CURRENT: 57mA per relay typical.
MAXIMUM SIGNAL LEVEL: 1100V peak, 0.5A DC or rms
switched, 1A DC or rms carry, 10W.
8
closures (cold switching); >5×106closures
10
Ω, <10pF.
9
9
Ω, <150pF.
H
L
G
H
L
G
J1
J10
Ω, <10pF.
H
L
G
7158 Low Current Scanner Card
Use with 7001 and 7002 Switch Mainframes
• Sub-picoamp offset current
• Maintains current path for
unselected channel
• BNC connectors
Ordering Information
7158 Low Current
Scanner Card
Accessories Supplied
4801 Low Noise Male to Male
BNC Input Cable
10-Channel
The Model 7158 provides quality low-current
switching at an affordable price. The offset current error generated is specified <1pA, with typical performance at <30fA. When used with a
voltage source and electrometer or picoammeter,
this card can easily automate insulation resistance tests, reverse leakage tests on semiconductor junctions, or gate leakage tests on FETs.
The Model 7158 is designed to maintain the current path even when the channel is de-selected.
Input connectors are BNC for shielding of the
sensitive measurements and for compatibility
with low noise coaxial cables such as Keithley
accessory cables Models 4801 and 4803. Two
outputs are provided to allow for chaining several scanner cards to one measurement instrument, and an isolation relay in the output HI
minimizes interaction between cards.
CHANNELS PER CARD: 10.
CONTACT CONFIGURATION: Single pole, simultaneous break
and make for signal HI input. Signal LO is common for all 10
channels and output. When a channel is off, signal HI is connected to signal LO.
CONNECTOR TYPE: BNC.
RELAY DRIVE CURRENT: 100mA per card typical (regardless of
channel closures selected).
MAXIMUM SIGNAL LEVEL: 30V, 100mA peak (resistive load).
CONTACT LIFE: >10
sures at low signal levels.
CONTACT RESISTANCE: <1Ω.
CONTACT POTENTIAL: <200µV.
OFFSET CURRENT: <1pA (<30fA typical).
3dB BANDWIDTH: 1MHz typical.
ACTUATION TIME: <1ms, exclusive of mainframe.
CHANNEL ISOLATION: >10
INPUT ISOLATION: Differential: >10
Common Mode: >10
COMMON MODE VOLTAGE: <30V maximum.
6
closures at maximum signal levels; >107clo-
14
Ω.
9
9
Ω, <150pF.
Ω, <50pF.
ACCESSORIES AVAILABLE
4801 Low Noise Male to Male BNC Input Cable
4802-10 Low Noise BNC to Unterminated Cable, 10 ft.
4803 Low Noise BNC Cable Kit for 7158
Ch. 1
Ch. 2 – 9
Ch. 10
Output
1
Output
2
1.888.KEITHLEY (U.S. only)
SWITCHING & CONTROL
96
www.keithley.com
A GREATER MEASURE OF CONFIDENCE
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