Keithley 194 Instruction Manual page 147

PERFORMANCE VERIFICATION
5.5 TEST EQUIPMENT CONNECTIONS
Figure 5-l shows the basic scheme for connecting the DC
calibrator to the Model 194. While channel 1 connections
are shown, connections for channel 2 on those units so
equipped would be similar. When making the connection,
use only good quality shielded cable. One end of this cable
should be equipped with a BNC connector to mate with
the VOLTAGE INPUT jack on the instrument, while the
other end of the connector can be terminated with a dual
banana jack. When making the calibrator connection, the
cable shield should be connected to the low output ter-
minal of the DC calibrator.
CAUTION
Maximum input is 250V peak, 2 x 107 V-Hz.
Figure 5-l. DC Verification Connections
5.6 VERIFICATION PROCEDURE
The steps below outline the procedure for verifying instru-
ment accuracy. This procedure is intended for use only by
qualified personnel using accurate and reliable test equip-
ment. If the instrument is out of specifications, refer to Sec-
tion 7 for calibration procedures, unless the instrument is
still under warranty. Figure 5-2 shows a flow chart of the
verification procedure.
Figure 5-2. Flow Chart
5-2