Tektronix DM501A User Manual

Calibration
Procedure—
DM 501A
Perf.
niance Check
Procedure
Table 4-1
(cont)
Description
1
Performance Requirements Applications
Example
....
.
^
n
e
i- ,m. f
. 1 :
! c e
5k
) a
.1
d a
;
d
Hango, 0 to 20 MO; accuracy,
i.0.05%.
Ohmmeter accuracy
check.
Electro
Scientific
Industries,
Inc.
Model DB 62 Dekabox.
Ttfini't'!
DJiirc r^ath
1
Range,
62"C
to +
240“C;
accuracy, i0.25“C.
1
1
[. . _ ..
Temperature probe
check
and adjustment
1
1
Neslab Instruments Inc
,
Model
ULT~80 Bath
Circulator
with denatured
ethyl
alcohol
coolant. Model
TX-9’’
Circulator
with Dow
Corning 710 fluid
and necessary hoses and
adapters.
"Rc(’i”res
a TM 500 series
power module.
’
Co
'
"i.
>
t'>e
TX-Q cooling coil to the cooling pump in the ULT-80 to obtain
temperatures between f10°C and
+40°
C.
WARNING
I
n.-!n(joron^ voUagos
irnty
bo oncoiintcrod in the lollowing steps. Caution
must
be
exercised. Do
not contact the
nn'put
connectors
of the voltage calibrator, the input terminals of
the
DM 5C
!A, or the Internal circuitry of
the
DM
tint
A.
FRONT
PANEL INPUT
1. Check Dc Voltage
Accuracy
a. E(.‘l
tiio
c!c voltage
cniib.rator for
a
rninimurn output
voltage.
b,
r’icsb
liie VOLTS
DC function
push button
switch.
c,
ConiToot
the dc
voltage calibrafi.tr to
ttie VOLTS/O
and L
OW connoctois through
appropriate cables and
ad.'g.'ters.
cl.
f’ress
the range
push buttons and set
ttre calibrator
voltages ns listed in
Table
4-?.
e.
Ct'&ck
-
that the DM
501A display
reads
wittiin the
display
limits for the ambient
temperature
as
listed
in
Tuii'e 12
f hot tfie
calitjrator tor a
minimum output
voltage.
g.
Demove
all
connections.
ACCURACY CHECKS
2. Check Dc
and Ac
Common
Mode
Rejection
Ratios
a.
Connect a
bne
female-to-dual
banana
connector
to
the
VOLTS/n
and LOW
connectors.
b.
Connect a
dual-binding
post
with bnc
male connec-
tor
to the
bnc female
connector of
the dual
banana
connector.
C-
Connect a
1 kC resistor between
the
binding
posts.
d.
Connect
the red
lead of
aclipleadadaptertofemale
bnc
connector to
Ihe red
binding post
(one side
of
the
resistor).
e.
Connect
the black
lead of the
clip lead
adapter
to
the
ground
binding far.'St
of
the DM
501A.
f
Connect
the
Imc female
connector
through a
coaxial
cable
to the
dc
voltage
calibrator.
g.
Press
the
VOLTS DC
function
push
button.
@
4-2

Tektronix DM501A Specifications

General

Brand	Tektronix
Model	DM501A
Category	Multimeter
Language	English