UEi Test Instruments DL99B - Manual (Page 7)

Troubleshooting
NOTE: This unit contains no user serviceable parts beyond those listed in
table above. In the event your instrument is physically damaged or does not
function properly after taking the listed action, please return the instrument
to UEi following the warranty and service instructions.
Specifications
Measurement limits
General Specifications
Electrical Specifications
*1000 V AC and Dc scales autorange from 400 to 1000 when greater than
400 volts are applied.
If I see this I should check for Then take this
malfunction corrective action
Debris on switch controls Move switch through all
functions 3 to 4 times
Instrument does not Battery voltage Replace low battery
turn on Rotary switch position Ensure switch moves freely
and is set to a
measurement position
Instrument turns on but Peak Hold button pressed Look for PEAK or HOLD
LCD indicates some icons displayed on the LCD
unreasonable or HOLD button pressed Turn off one or both buttons
unchanging value
Short test leads together -
A value appears Stray voltage or EMF fields If a value near 000 appears,
on screen with no instrument is OK
input applied Move meter and leads
away from devices that
create electrical fields
Defective test leads Short test leads together
in the 400 ohm scale -
Expect less than .5Ω
A known value is not PEAK or HOLD buttons pressed Turn off one or both
displayed on the LCD buttons (check for icons
when measured on LCD)
Bad test lead connections Ensure test leads are fully
inserted and free of
corrosion or dirt
DC Amps not zeroed Move meter away from
power source and press
DC or ZERO for 2 seconds
Battery voltage Replace low battery
Jaws are not closed tight Clean top and bottom
mating surfaces of
clamp jaws
Meter reading is Rotary selector knob is offset Ensure knob is firmly
unstable placed in switch position
Bad test lead connection Ensure there is no
insulating material, dirt
or debris at contact points
No audible tone with Improper selector position Tone sounds only in
near zero resistance continuity mode -
value Place selector in
position
Amps reading does Proper switch position Ensure switch is in proper
not work AC or DC amps position
(A AC or A DC)
DL99B-MAN P. 6
AC Amperage 1000 Amps
DC Amperage 1000 Amps
AC Voltage 1000 Volts
DC Voltage 1000 Volts
Ohms 400 Kilohms
Continuity < 40 ohms
Size H x W x L, in (mm) 9.20” x 3.42” x 1.77”
(234 x 87 x 45)
Maximum Jaw Opening 1.25” (32 mm)
Storage Temperature -4˚ to 140˚F
(-20˚ to 60˚C)
Operating Temperature 32˚ to 113˚F
(0˚ to 45˚C)
Relative Humidity 0% to 80% RH
(Storage and Use)
Weight (approximate)
14.8 oz (420 g)
Electrical Certification Standards:
IEC 1010-1 CAT III 600 Volts
1000 Amps AC/DC
CSA C22.2 No. 1010.1
ISA S 82,01
Battery Type 9V, NEDA 1604, 6F22 or 006P
Function Range Resolution Accuracy
AC Amps @ 400 A 0.1 A ±(2% + 5 digits)
(50 Hz to 450 Hz) 1000 A 1 A
DC Amps 400 A 0.1 A
1000 A 1 A ±(1.5% + 3 digits)
AC Volts* 400 V 0.1 V ±(1.9% + 3 digits)
(50 Hz to 400 Hz) 1000 V 1 V
DC Volts* 400 mV 0.1 mV ±(1.0% + 2 digits)
400 V 0.1 V
1000 V 1 V
Ohms Ω 400 Ω 0.1 Ω ±(1.0% + 2 digits)
40 K Ω 0.01 KΩ
Continuity 400 Ω 600 VΩ Tone sounds @ < 40 Ω