Keithley 2001 User Manual

Front Panel Operation
3-73
adapter. With this adapter, a Model 706 could be substituted
for the Model 7001 in the previous example (Asynchronous
Trigger Link example #1). With the Model 706 set for Exter-
nal Triggering, the test would start when the single scan
mode is selected and initiated.
Asynchronous Trigger Link example #2
In this example, the test system (Figure 3-33) includes a
Model 2001 to measure each DUT at two different bias lev-
els that are provided by a Model 230 voltage source. With the
source set to the first voltage level, the ten channels are
scanned and measured. The source is then set to the second
voltage level and the ten channels are again scanned and
measured.
Since this example uses an instrument that does not have
Trigger Link (Model 230), the Model 8502 Trigger Link
Adapter is required. Connections are shown in Figure 3-34.
Figure 3-32
Connections using Trigger Link adapter
Trigger
Link
2001 Multimeter
Trigger
Link Cable
(8501)
706 Scanner
IN
OUT
External
Trigger
Channel
Ready
BNC to BNC
Cables (2)
(7501)
1
2
8502
Trigger
Link
Adapter
Figure 3-33
DUT test system (asynchronous example #2)
1
DUT
#1
2
DUT
#2
10
DUT
#10
2001 Multimeter
Input HI
Input LO
OUTPUT
Card 1
7011 MUX Card
COM OUT
230
Voltage
Source
External Triggering and Trigger Link
As previously mentioned, the trigger pulses for the asynchro-
nous Trigger Link are identical to the trigger pulses used for
External Triggering. The only thing that prevents them from
being used together in a test system is connection incompat-
ibility. Trigger Link uses 8-pin micro-DIN connectors while
External Triggering uses BNC connectors.
This connection problem can be solved by using the Model
8502 Trigger Link Adapter. The adapter has two 8-pin micro-
DIN connectors and six BNC connectors. The micro-DIN
connectors mate directly to the Trigger Link connector on
the Model 2001 using a trigger link cable. The BNC
connectors mate directly to the External Triggering BNC
connectors on other instruments using standard male BNC to
BNC cables.
Figure 3-32 shows how a Keithley Model 706 Scanner can be
connected to the Trigger Link of the Model 2001 using the

Keithley 2001 Specifications

General

Model	2001
Category	Multimeter
Manufacturer	Keithley
Type	Digital Multimeter
Digits of Resolution	7.5
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 500 kHz
Connectivity	GPIB, RS-232
Display	VFD
Resistance Accuracy	0.008% + 2.0 mΩ
Frequency Accuracy	±0.01%
DC Current Range	10 μA to 3 A
AC Current Range	10 μA to 3 A
Power Supply	100 V to 240 V AC, 45 Hz to 66 Hz