IET Labs, Inc. RLC Digibridge 1693, Руководство пользователя и обслуживания, Страница: 31 / 171

7
1693 RLC Digibridge
Introduction
Operating Guide f
or Model 1693 RLC Digibridg
e
Model:
1693-9700
SN:
9090035011
1. General Information The 1693 RLC Digibridge is a microprocessor-controlled, automat
ic RLC meter
.
Measurement parameters:
R/Q, L/Q, C/D (series or parallel), R/X (series), G/B (parallel
), Z/Angle or
Y/Angle
Ranges:
Parameter
Direct Reading Range
Ratio and DQ in PPM
R and [Z]
0.00001 Ω to 99999 kΩ
0.00010 Ω to 9999.9 GΩ
L
0.00001 mH to 99999 H
0.00010 nH to 9999.9 MH
C
0.00001 pF to 99999 µF
0.00010 aF to 9999.9 F
Test frequencies:
Over 500 selectable test frequencies ranging from 12 Hz to 200
kHz
Applied voltage:
5 mV to 1.275 V (programmable in 5 mV steps)
Measurement speed:
Up to 19 measurements per second
Bias:
Internal:
2.0 Vdc;
External:
60 Vdc max
Accuracy:
Basic RLCGZY
:
±0.02%
The following programmable functions are available:
Parameter
Range
Default
Sample setting adjustment
Cancel
View Current Setting
Test frequency
12 Hz to 200 kHz
1 kHz
Programming 400 Hz: [FUNCTION] [.] [4] [=] [SHIFT] [FREQUENCY]
NA
[SHIFT] [FREQUENCY]
Test voltage
5 mV to 1.275 V
1 V
Programming 15 mV
:
[FUNCTION] [.] [0] [1] [5] [=] [SHIFT] [VOL
TAGE]
NA
[SHIFT] [VOL
TAGE]
Averaging
1 to 256
1
Programming 25 measure
-
ments: [FUNCTION] [2] [5] [=] [SHIFT] [A
VERAGE]
[FUNCTION] [1] [=] [SHIFT] [A
VERAGE]
[SHIFT] [A
VERAGE]
Delay
0 to 99,999 ms
0
Programming a delay of 200 ms: [FUNCTION] [2] [0] [0] [=] [SHIFT] [DELA
Y]
[FUNCTION] [0] [=] [SHIFT] [DELA
Y]
[SHIFT] [DELA
Y]
Internal Bias
2 V
OFF
[SHIFT] [INT BIAS]
[SHIFT] [INT BIAS]
again
NA
D and Q in PPM
NA
OFF
[SHIFT] [DQ in PPM]
[SHIFT] [DQ in PPM] again
NA
Hold constant voltage
NA
OFF
[SHIFT] [CONST V]
[SHIFT] [CONST V]
again
NA
Hold constant range
NA
OFF
Select the desired range then [SHIFT] [HOLD RNG]
[SHIFT] [HOLD RNG] again
NA
2. Starting-up
a.
If the Digibridge includes an optional IEEE-488 interface, set
[
TALK]
switch (rear panel) to
TALK ONL
Y
(un-
less instructions are to be received through the IEEE-488 bus).
b.
Make sure the [
EXTERNAL
BIAS]
is in the
OFF
position.
c.
Press the [
POWER]
button.
The unit runs a brief self-check on start-up.
d.
W
ait until keyboard lights indicate
MEASURE
,
VALUE
,
SLOW
,
TRIGGERED
,
SERIES
.
If a fault is detected, measurements are blocked and an error
code remains displayed. See manual, para
-
graph 3.13. If keyboard lights remain dark, keyboard is locked. T
o unlock it, see manual paragraph 3.9.
To switch power of
f, press the [
POWER]
button.
3. Obtaining optimal accuracy by zeroing
Before making measurements, zero the Digibridge as follows: (No
te: For best accuracy
, repeat this proce-
dure every day
, after each change of frequency
, and after any change of test-fixture adaptors.)
a.
Attach extender cables or whichever test fixture/adapter is appr
opriate.
b.
Create an open circuit by having the spacing b and - ca
ble ends match the spacing of the DUT
terminals. See the figure. If the spacing of DUT terminals is unknown, make sure that the + and – ends of the cable are at least 0.75” (19 mm) apart.
c.
Confirm that
MEASURE
keyboard light is lit.
d.
Press [
MEASURE MODE]
key to select
TRIGGERED
mode
e.
Press the following keys:
[1] [6] [9] [3] [=] [SHIFT] [OPEN]
.
f.
Press
[ST
ART]
and wait for the green
GO
light.
g.
Create a short circuit across test terminals by connecting all cable ends together as shown in the figure.
h.
Press the following keys:
[1] [6] [9] [3] [=] [SHIFT] [SHORT]
.
i.
Press
[ST
ART]
and wait for the green
GO
light.
At this point, the unit should be ready for taking measurement
s.
If something goes wrong during the zeroing process, the proce
-
dure should be repeated.
4. T
aking measurements
a.
Select measurement conditions as follows: •
[FUNCTION]
key selects
MEASURE
mode
•
[DISPLA
Y]
key selects
VALUE
,
∆%
, or
BIN NO
•
[MEASURE RA
TE]
key selects
SLOW
,
MEDIUM
, or
FAST
•
[MEASURE MODE]
key selects
CONTINUOUS
or
TRIGGERED
•
[EQUIV
ALENT CIRCUIT]
key selects
SERIES
or
PARALLEL
b.
Select impedance to be measured as follows •
[R/Q]
key to show Resistance in the primary display and Quality facto
r in the secondary display
•
[L/Q]
key to show Inductance in the primary display and Quality fact
or in the secondary display
•
[C/D]
key to show Capacitance in the primary display and Dissipation
in the secondary display
•
[C/R]
key to show Capacitance in the primary display and Resistance
in the secondary display
•
To select other parameters, press and hold
[SHIFT]
key and select as appropriate
c.
Connect component to be tested to the test terminals as appropr
iate.
d.
If in the
TRIGGERED
mode, press
[ST
ART]
.
Keep hands and objects at least 10 cm (4 in) from test fixture. If
NEG RLC
lights, the selected parameter is not appropriate for the DUT
and another parameter should be se
-
lected. For example, if the Digirbdige is set to measure capaci
tance, and
NEG RLC
is lit, that means that the DUT
is inductive.
To view relative measurements, the nominal value and the bin lim
its must be first programmed. (See section 5 below
.)
Once the values have been programmed, select one of the followi
ng options by pressing the
[DISPLA
Y]
key:
•
% difference from the nominal value: ∆%
must be lit
•
Dif
ference from nominal in original units (pF
, mH, etc.):
VALUE
and
∆%
must both be lit
•
Assigned bin number: BIN NO must be lit
Obser
ve
all
saf
ety
rules
when
w
or
king
with
high
voltages
or
line
voltages
. Connect
the
(G)
ter
minal
to
ear
th
ground
in
order
to
maintain
the
case
at
a
saf
e
volt
-
age
. Whene
ver
hazardous
voltages
(>45
V)
are
used,
tak
e
all
measures
to
av
oid
accidental
contact
with
an
y
liv
e
components:
a)
Use
maxim
um
insulation
and
minimiz
e the use of bare conductors
. b) Remo
ve po
w
er when adjusting s
witches
. c) P
ost w
ar
ning signs and k
eep personnel saf
ely a
w
ay
.
W
ARNING
1693 label/09-20-2012
CA
GE CODE:
62015
IET LABS, INC
.
www
.ietlabs.com
• 534 Main Street,
W
estb
ur
y, NY 11590 • (516) 334-5959 • F
ax:
(516) 334-5988
Sense +
Sense -
Drive +
Drive -
M
at
ch
sp
ac
ing
o
f
DU
T t
er
m
ina
ls
DU
T
+
-
Sense +
Sense -
Drive +
Drive
-
Op
en
Co
nn
ec
tio
n
Sh
or
t
Co
nn
ec
tio
n
Figure 1-5:
T
ypical operating guide attached to 1693