DB621

DB621
DB621 Megohmmeter
*
Te s t & M e a s u r e m e n t
Versatile and accurate measurements up to 1.000.000 GΩ
Designed to be used with 40 channel IR scanner
• High speed testing 45 ms
• High accuracy ± 2 % to 1 TΩ
• Measurement Range from 10 kΩ
up to 1 PΩ (Peta = 1.000.000 Giga Ω )
• Leakage current down to 1 pA
• Accuracy ± 2 %, ± 1 pA
• Test Voltages: 10 V to 1 kV
Powerful charge capability
Charge current: 2/ 25/ 100 mA
4 ranges and/or auto range
5 Programmable Limits
Designed to be used with 40 channel IR Scanner type DB640
in 1 V steps
• Contact Check Function
GENERAL:
The DB621 Megohmmeter is designed for use in
various applications such as testing insulation resistance of cables and testing leakage current in
capacitors.
Danbridge
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The instrument is microprocessor controlled. The
menu driven bright back-lit LCD display enables
quick, logical and easy-to-use operation.
Programmable delay of measurement: Up to 10 s in
steps of 1 ms after external triggering.
The measurement results may be used for BIN sorting
with one out of five limit sets.
DB621 is fitted with both standards IEEE (GPIB) and
RS232 Interfaces. Also an optically insulated Handler/
Limits Interface is included.
The DB621 has test voltages up to 1kV 100 mA.
The instrument can be programmed to automatically perform timed testing, consisting of up to 20
test steps, either high current charging, normal
charging, or a measurement sequence. Each sequence may last up to 60 min.
The DB621 Megohmmeter also features preprogrammed sequences, for example a sequence
for Quality Control, that charges until a minimum
insulation resistance is reached. Then it discharges automatically.
The high speed of DB621 with only 45 ms between
measurements gives the possibility of implementing
prediction intelligence in an external PC for very highspeed production test of capacitors.
The low input impedance of 10 kΩ for test current
above 10 nA, and 1 MΩ for test current below 10nA is
also a contributory factor in reaching the high speed
testing.
Automatic check of contact failure for capacitors and
capacitive elements like cables is a feature implemented for high volume production. The contact check
does not increase the test time.
DB621 Megohmmeter
Specifikations
Danbridge
*
Te s t & M e a s u r e m e n t
DC CURRENT MEASUREMENTS:
Ranges:
Accuracy:
TEST VOLTAGE:
Range:
Accuracy:
Stability:
Source Resistance:
Current Limits:
Switching:
Timing:
Programmable Measurement delay:
Discharge Resistance:
Discharge Time:
RESISTANCE MEASUREMENTS:
Range:
Accuracy:
MEASURING SPEED:
Trig Mode:
Continuous Mode:
DISPLAY READING:
Direct reading:
Bar Graph:
x – y Graph:
STANDARD FITTED INTERFACES:
LIMITS:
IEEE 488:
(IEEE 488-1 and 2)
RS232C:
Control I/O:
Ambient Temperature:
Power:
DIMENSIONS:
Height:
Width:
Depth:
Weight:
ACCESSORIES SUPPLIED:
OPTIONS:
Available in Scanner versions:
Fixture for axial and radial components:
Test probe with trig contact:
Range 1: 1 pA to 10 nA; Zi = 1 MΩ or 10 kΩ (selectable)
Range 2: 2 nA to 100nA; Zi = 10 kΩ
Range 3: 20 nA to 10 uA; Zi = 10 kΩ
Range 4: 2 uA to 1 mA; Zi = 10 kΩ
±2 % of value ±1 pA
10 V to 1 kV in 1 V steps
±2 % of value or ±1 V
±10 ppm @ 10 % change in line voltage, ±20 ppm/degree C
22 Ω
2, 25 or 80 mA (100 mA short circuit)
Manually ON/OFF from front panel or controlled by a built-in timer, or by remote
Programmable Fast Charging: 0 to 9999 ms (charge resistance 22 Ω)
0 to 9999 ms
10 kΩ / 11 W, Max. dischargable energy for voltage > 300V: 500 Joule
t = 0.1 x Cx (in µF) with V test decreasing to 1 % of test level
10 kΩ to 1 PΩ (dependent on test Voltage) (Peta = 1.000.000 Giga)
For I > 100 pA: 2%
For I ≤ 100 pA: Acc. equals the acc. of current measurement.
One Measurement: <48 ms (excl. charging)
Average up to n = 100 measurements: <48 + (N-1) x 40 ms (excl. charging)
Direct Reading: 90 to 4000 ms depending on average
Bar Graph: Display update every 40 ms
Current or Resistance, 3,5 digits
8 ranges with 2 decades per graph with fixed- or auto scaling
Current or resistance scale vs. time scale
5 built-in programmable limits on resistance or current
“Talker Only” and Talker/Listener” Modes. True sub-set of Standard protocol
Baud rate up to 19.200 Baud. Full two-way control/output
Opt coupler input / output 25 V/10 mA. Trig, Measure END Signal, Trig Ready
Signal, Data Ready Signal, Fault Signal, Limit Outputs
10 – 40 degrees Celsius
90 – 130 and 200 – 260 V AC 50 – 60 Hz
140 mm/ 5.5 inch
438 mm/ 17.2 inch
360 mm/ 14.2 inch
11.3 kg/ 24.9 lbs.
Line power connector, Two 1.5 m coax cables with H.T. BNC connectors
Brackets for 19” rack-mounting, Manual in English
5 channels/40 Channels
Yes
Yes
© September 2008, Danbridge A/S
ALL SPECIFICATIONS SUBJECT TO
CHANGES WITHOUT PRIOR NOTICE
Danbridge A/S, Hirsemarken 5, DK-3520 Farum, Denmark
E-mail * sales@danbridge.com
Phone +45 44 95 55 22 Fax +45 44 95 45 04
Home-page * www.danbridge.com
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