Metercomplete; Analog Output - Keithley 595 Instruction Manual

OPERATION
TRIGGERS ON
FALLING EDGER
Figure 3-7. External Trigger Pulse Specifications
F igure 3-8. Meter Complete
Pulse Specifications
3.5.2 Meter Complete
or a chart recorder. (Alternate data outputs include sending
The Model 595 can be programmed to output a pulse that
data over the IEEE-488 bus to a listening device such as a
can be used to trigger other instrumentation. A single 'ITL
~lis ten-only or addressable printer, or the instrument could
compatible negative-going pulse with a minimum duration
output: voltage and capacitance data to an IEEE-488 plot-~
of lmsec (see Figure 3-8) will appear at the METER COM-
ter, such as an HP-747A or equivalent, to plot Cv, Q/t V,
PLETE OUTPUT jack each the the instrument completes
or IV curves. See paragraphs 4.11 and 4.12 for
a reading. To use the meter complete output; proceed as
information).
. .
- - __. .I ,.r^r_ . . . 7 .
1. umnect tne iwoaei 5x1 to me mstmment to ae tng
Fred
The analog outputs are recbnstructed from the IV, CV, or
with a suitable shielded cable. Use a. sta 1 ' "I rn
naara olUC con-
Q/t-V data (using digital to analog converters). The I, C, or
nectar to
make
the connection L- c'- TO me Model 595.
Q/t data corresponds to the displayed reading. The V data
conesponds to the voltage at which the reading was taken,
not the voltage being soured.
CAUTION
Do not exceed 30V between the METER COM-
PLETE common (outer ring) and chassis ground
or a shock hazard may be present.
2.
Select the desired function, range, trigger, and other
operating parameters as desired.
3.
In conhnous trigger, the iq.gmInent will output pulses
at the reding rate; each pulse will occur after the Model
595 has completed a reading.
4. In one-shot trigger, the Model 595 will output a pulse
once each time it completes the read&g conversion.
3.5.3 Analog Outputs
On the C,I output, 1V is equivalent to lO,KKl display counts
on Xl gain and ZOO0 counts on Xl0 gain. On the V output
level, 1V = 1OV on the voltage source output. The
max-
imum output voltage is +ZV and output resistance is lkt2.
Response time (reading updates) mirrors the display witbin
5msec. Isolation is 3OV
peak from chassis or GUARD to
ANALOG OUTPUT LO, which is connected to IEEE
common.
The PEh! LI6T binding post on the rear panel provides plot-
ter pen lift control. PEN LJFI puts the pen down at the
start of a staircase plot and picks it up at the end. (PEN
LIFT is only active during staircase measurements.
-rL _____ -_-- 1 ___L__L ^_.^ 3-L,^L_l^. LL-Lom*&,fod~
CAUTION
_.--- -_- Do not exceed 30V between the ANALOG OUT-
IILT rea.c pa,cl uuqJua d"alla"IC LO p""vL Udul m
595 are: C, I ANALOG OUTPUT and V
AE\lALVti VUI:
PUT: These outputs work with either an analog X-Y recorder
PUT COMMON (IEEE COMMON) and chassis
ground or a shock hazard may be present.
3-14