The following safety precautions must be
observed during all phases of test set-up, test
hookups, testing, and test-lead disconnects.
Do Not Service or Test Alone
Do not perform test procedures or service
unless another person is also present who is
capable of rendering aid and resuscitation.
Avoid Contact with High Voltage
Because electrical utility station
environments contain high voltages and
currents, there is always the possibility of
personal contact with an unexpected lethal
voltage generated by magnetic induction
and/or electrostatic leakage from nearby live
circuitry. When test units are connected to
deenergized (“dead”) power lines, regardless
of how short they are, always discharge the
lines before attaching any test lead. Because
of the possibly deadly consequences of
physical contact with such high-voltage lines,
engineers and technicians must always treat
electrical equipment and hookups as though a
lethal condition will eventually occur.
Therefore, no matter how unlikely it may
seem, never assume anything about the safety
of any test setup.
Ensure the safety of personnel by checking
first-hand to eliminate all possible hazards!
Do Not Test Inductive Winding Resistance
Because the DMOM-100 produces test
currents up to 100 amperes, it is able to build
up large magnetic fields in iron-core
transformers. The interruption of such test
currents can produce a high voltage spike
that can cause severe injury, death, and/or
equipment damage. Therefore, do not
attempt to measure the resistance of iron-core
transformer windings (use equipment
designed specifically for that purpose).
Do Not Modify Test Equipment
Because of the added risk of introducing
additional or unknown hazards, do not install
substitute parts or perform any unauthorized
modification to the DMOM-100. To
ensure that designed safety features are
maintained, it is recommended that all
DMOM-100 repairs be done at Vanguard
Instruments Company or by an authorized
repair-service. Unauthorized DMOM-100
modifications can create unknown safety
hazards and will void the warranty.
Follow Exact Operating Procedures
Any deviation from the operating procedures
described in this manual may create one or
more safety hazards, damage the DMOM100 or cause test errors; Vanguard
Instruments Co. assumes no liability for
unsafe or improper use of the DMOM-100.
Figure 8.0Bus Bar Connection .................................................................................................. 23
iii
Page 6
Page 7
Operating ProceduresDMOM-100™
1.0 INTRODUCTION
1.1Applicability
This manual applies to the Model DMOM100™, part number VIC-9000-100, which is
made by Vanguard Instruments Company.
1.2Supersedure Notice
This manual is the basic issue for the Model
DMOM-100 and does not supersede any
published document.
1.3General Description
The DMOM-100™ is a Digital Micro-Ohm
Meter for precisely measuring non-inductive
resistances from 1 micro-ohm to 300 milliohms. Applications include resistance
measurement of circuit-breaker contacts,
bushing joints, or any other low resistance.
It is field-portable, rugged, and easily
operated by first-time users having little
training (its microprocessor-driven, which
automates many functions). It has a 16-key
pushbutton pad for entering test parameters
and control functions, and a 4-line by 20character LCD readout for displaying
control-option menus, measured resistance
values, and related identifying data. The
DMOM-100 has a built-in thermal printer,
which prints test data on 2.5-inch-wide
thermally sensitive paper.
Operation requires little more than
connecting the test leads to an unknown
resistance and selecting the test parameters;
It requires no calculation of lead-loss, handwritten notes, or the memorizing of detailed
routines. Operators select the test current
(10 to 100 amperes) and test time (5 to 60
seconds). Measured resistance data is
displayed and can be printed on the thermal
printer. The measured resistance data can
also be stored (up to 63 records of 96
readings each) in FLASH EEPROM
memory; Operators can recall the stored
resistance-measurements and related data at
a later time for review and printing.
1.4Functional Description
DMOM-100 operation is based on the
electrical relationships described by Ohm’s
law: R=V/I, where I is a known test current
and V is the voltage across the unknown
resistance (e.g., breaker contacts). Since the
test current through the unknown resistance
is known and voltage across it is read by the
microprocessor, the resistance is calculated
using Ohm’s law.
The DMOM-100 test voltage is supplied
by a filtered direct-current power supply. A
precisely regulated constant-current source
controls the current ramps up/down time and
the test current. The dc test current (10 to
100 amps) slowly ramps up/down, which
virtually eliminates magnetically induced
transients; thus, the risk of inductively
tripping a circuit-breaker’s bus differential
relay is virtually non-existent.
DMOM-100 voltmeter test leads are run
separately from the current-bearing test
leads to the resistive load; thus, voltages are
measured at the terminals of the resistance
being measured, eliminating error from the
I•R voltage drop in the test current cables.
The DMOM-100 makes precise microohm measurements possible without
calculating compensation for test-currentlead resistance errors.
1.5Furnished Test Accessories
The DMOM-100 is supplied with a power
cord, a roll of 2.5-inch-wide printer paper,
and one 35-foot test cable set with quickdisconnect plugs to the unit and heavy-duty
alligator clamps to the load. Heavy-duty
welding-type C-clamps (see Appendix B)
are also available as optional accessories (Cclamps allow test- lead connection to a wide
variety of bushing sizes, bus bars, and many
other junctions that require low-contact
resistance).
1
Page 8
Operating ProceduresDMOM-100™
2.0 DMOM-100 SPECIFICATIONS
Table 1.0 DMOM-100 Specifications and Leading Particulars
MODEL .............................................DMOM-100 (part number VIC-9000-100)
TYPE..……… ..................................Special-purpose test equipment, portable; 100-ampere,
Digital Micro-Ohm Meter
POWER ............................................85 to 132 V ac or 200-240 V ac (selectable), 50/60 Hz
SIZE (inches) ....................................16.8 wide by 12.6 high by 10.6 deep
WEIGHT............................................ Less than 21 lbs
TEST CURRENT .............................. 10 to 100 amperes
RESISTANCE READING RANGE ...1 micro-ohm to 300 milliohms
DISPLAY ..........................................LCD, 4-line by 20-character, back lighted
CONTROLS......................................Keypad: 10 number keys and 6 function keys
COMPUTER INTERFACE ................RS-232C
PRINTER ..........................................Thermal printer (prints on 2.5-inch-wide thermal paper)
ENVIRONMENT ...............................Operating: 0°C to 55°C; Storage: -40°C to 65°C
FURNISHED ..................................... One power cord, one 35-foot test cable set,
One cable bag
EXPENDABLES ............................... Paper, thermally sensitive, 2.5-inch wide roll
(VIC part # TP-3)
WARRANTY ..................................... One-year warranty on parts and labor; post warranty
service contracts available
NOTE:
THE ABOVE SPECIFICATIONS ARE VALID AT NOMINAL OPERATING VOLTAGE AND AT A TEMPERATURE OF 25°C
(77°F)
DMOM-100 SPECIFICATIONS MAY BE UPGRADED AND CHANGED WITHOUT PRIOR NOTICE.
2
Page 9
Operating ProceduresDMOM-100™
3.0 CONTROLS AND INDICATORS
(See Figure 1.0 and refer to Table 2.0).
The DMOM-100 controls and indicators
are shown in a panel illustration (see Figure
1.0). Pointing leader lines reference each
item in the figure with an index number.
Each index number is cross-referenced to a
functional description in Table 2.0, which
describes the purpose of each item on the
control panel. Although the purpose of
these controls and the display may seem
obvious, users should become familiar with
them before attempting to use the DMOM100. However, accidental misuse of the
controls will usually cause no serious loss of
data or equipment damage. First-time users
should review and become familiar with the
Safety Summary located in the front section
of this manual.
Figure 1.0 DMOM-100 Control Panel (Controls and Indicators)
3
Page 10
Operating ProceduresDMOM-100™
Table 2.0 DMOM-100 Controls and Indicators
Fig. 1
IndexPANEL MARKINGFUNCTIONAL DESCRIPTION
1
2
3
4
5
6
7
8
(no overall marking; keys are
individually marked—see
ON/OFF
RS-232C
(no marking)Display, back-lighted liquid crystal (LCD); 4-line
(no marking)Built-in thermal printer; prints test result data on
Figure 1)
HIGH CURRENT
PRESENT
(no marking)Voltage-sensing test-lead plug-in sockets (2), red;
(no marking)Test-current lead plug-in sockets (2), red;
Input power connector with third-wire safety
ground and 10A built-in circuit breaker.
Connector, 9-pin; Serial interface-port connector
(female DB type) to allow the DMOM-100 to
be controlled by an IBM-compatible PC.
PINSIGNAL
2Tx
3 Rx
5 Signal Gnd
by 20-character; sunlight readable; displays test
menus (operator options), status, and test results
(See Figure 2 for operating displays of control
steps in logical flow sequence).
keys and 6 function keys (i.e., START, STOP,
CLEAR, ENTER, & CONTRAST/PAPER
positioning ∧ & ∨).
Warning indicator; red LED; Lights when high
current is running through the test leads.
reads voltage at test load.
conducts up to 100 amperes through unknown
resistances.
4
Page 11
Operating ProceduresDMOM-100™
4.0 PRETEST SETUP
4.1Operating Voltages
The DMOM-100 operating voltages are
selectable between 90-130Vac, 50/60Hz or
210-240, 50/60Hz. Voltage selection is set
Table 3.0 Voltage Selection
VOLTAGE SELECTIONTERMINAL BLOCK JUMPERS
90-130VacBrown to blue & yellow to green
210-240VacBlue to yellow
by the placement of jumpers on the power
terminal block as listed in Table 3.0 below
and Figures 2.0 and 3.0.
120Vac Jumper Installation
Figure 2.0 90 to 130Vac Jumper Setting
Figure 3.0 210 to 240Vac Jumper Setting
5
220Vac Jumper Installation
Page 12
Operating ProceduresDMOM-100™
4.2DMOM-100 Printer Paper
The DMOM-100 printer uses 2.5-inch
wide thermal paper for printing test results.
We recommend that to maintain the highest
quality printing and to avoid paper jamming,
use paper supplied by our factory. Paper
can be ordered from two sources, as follows:
Vanguard Instruments Co, Inc.
1710 Grevillea Court
Ontario, CA 91761
Tel: 909-923-9390
Fax: 909-923-9391
Part Number: TP-3 Paper
OR
BG Instrument Co.
Route 1, Box 258
Mead, WA 99201
Tel: 509-893-9881
Fax: 509-893-9803
Part Number: TP-3 paper
4.3DMOM-100 Cable Connections
The DMOM-100 is supplied with a 35foot test cable set. Each cable consists of a
current-carrying cable and a voltage-sensing
cable. The current-carrying cable is
terminated with a 100-ampere male plug.
The sensing cable is terminated with a 25ampere female plug. Insert the current-cable
plugs and voltage-sensing plugs into their
respective control-panel jacks (see Figure
4.0 below). Ensure that voltage plugs
(smaller) are inserted into jacks adjacent to
their companion current jacks (larger).
Figure 4.0 DMOM-100 Cable Connection
6
Page 13
Operating ProceduresDMOM-100™
5.0 OPERATING PROCEDURES
(Refer to Tables 4.0 through 12.0)
5.1Operating Overview
(See Figure 5.0, for step-by-step flow.)
Procedures for operating the DMOM-100
are presented in tabular format, with a
different table for each of the main menus
(START and SETUP) procedures. Each
procedural step is indexed by number and
indicates an operator action, followed by a
description of the result or what should be
observed to confirm the action (setting the
stage for the next step). All operations are
described in step-by-step sequences and
begin with the start menu (shown below):
START MENU
1. RUN TEST 06/11/01
2. SETUP 12:23:01
3. CAL CHECK
Item 1 on this menu (RUN TEST) is the
procedure for measuring an unknown
resistance. Item 2 (SETUP) is for record
identification in the DMOM-100. Item 2
(SETUP) expands into a menu of support
functions. Item 3 (CAL CHECK) is a
performance-verification procedure for
checking key circuit functions (refer to table
11). All operator procedures begin with the
START MENU and may continue on the
SETUP MENU, with each step-by-step
procedure presented in tabular form.
SETUP MENU
1. ENTER ID
2. REVIEW RECORD
3. RESTORE RECORD
4. NEXT PAGE
The SETUP MENU lists 4 user options:
Item 1 (ENTER ID) is used to specify
identification record data (please observe
instructions in note 2 on Figure 5.0, Step-by-
Step Procedures for DMOM-100
Operations). Item 2 (REVIEW RECORD)
is used to review store records. Item 3
(RESTORE RECORD) is used to erase or
restore test records or to print a directory of
test records in stored memory. Item 4
(NEXT PAGE) is used to put the DMOM100 under PC control or to set the time
and date clock.
5.2Preparation
Plug unit power plug into power service
outlet. Set unit main power switch to ON
position. Plug test-lead cable plugs into red
jacks on control panel (ensure current and
voltage-sensing cables are plugged into
companion jacks). Connect current and
voltage-sensing test lead clamps to opposite
terminals of resistance to be measured.
5.3Keying-in Data Characters
Unless otherwise prompted by the display,
keyed-in data is loaded by pressing the
ENTER key (which also changes the display
to go to the next screen). When using the
alpha/numeric keys (like telephone dial-in
pushbuttons; see item 5 of Figure 1.0) to
specify data characters: Press the key once
to set the number marked on the key. Press
the key a second time to set the first letter
marked on the key. Press the key a third
time to select the second letter marked on
the key. Press the key a fourth time to select
the third letter marked on the key.
Additional key presses will repeat the
selection cycle (e.g., 2, A, B, C, 2 . . .).
When the character of choice is selected,
press the ∧ key to advance to next character
space; press the ∨ key to back-space. Press
CLEAR to delete a selected character
(cursor must be on character to be deleted).
Again, press the “ENTER” key to load all
character selections.
7
Page 14
Operating ProceduresDMOM-100™
.
Figure 5.0 Step-by-Step Procedures for DMOM-100 Operations
8
Page 15
Operating ProceduresDMOM-100™
9
Page 16
Operating ProceduresDMOM-100™
5.4Run Test Procedure
The following procedure describes the steps
to measure an unknown resistance.
Table 4.0 Run Test Procedure (Measure an Unknown Resistance)
STEPACTION
4-1
4-2
4-2a
Begin RUN TEST procedure: Press key no.
1 on START MENU. “SELECT TEST
CURRENT” menu appears.
Select test current: Press key for desired test
current. If a test current is other than listed
in items 1 thru 4, then press key # 5 for userdefined (CUSTOM) test current and go to
step 4-2a. If menu items 1 thru 4 were
pressed, then SELECT BURN-IN TIME
menu appears. Go to step 4-3.
NOTE
Select 5-second burn-in time in this
example.
Custom select burn-in current level entry by
pressing numeric keys, then press ENTER
and go to step 4-3.
NOTE
For this example, we used 100A test current.
NOTE
The red HIGH CURRENT PRESENT
indicator will begin flashing when the test
current are applied to resistance load.
DMOM-100 DISPLAY
SELECT TEST CURRENT:
1. 10A 2. 25A
3. 50A 4. 100A
5. CUSTOM
SELECT BURN-IN TIME:
1. 5 SEC 2. 10 SEC
3. 20 SEC 4. 30 SEC
5. 60 SEC
ENTER TEST CURRENT
(10 to 100)
100 AMPS
4-3
4-4
4-5
Select burn-in time by pressing the key (1 -
6) that corresponds to desired burn-in time
(see display on step 4-2). Display of
selected test current and burn-in time
appears.
Press START key to run resistance
measurement test. Display of ramping
current and percent of ramp level displays
with the notice TEST IN PROGRESS.
When test current has ramped up to the
specified level (current is at 100%), the test
result display appears automatically.
Automatic; no operator action required.
Current, burn-in time, and resistance
measurement changes on the display during
burn-in. At the end of burn-in time, final
resistance measurement displays.
10
CURRENT: 100 AMPS
BURN - IN: 5 SEC
“START” TO RUN TEST
CURRENT: 100 AMPS
RAMPING CURRENT 10%
TEST IN PROGRESS
PLEASE WAIT
CURRENT: 100 AMPS
BURN-IN: 5 SEC
500.5 MICRO-OHMS
PLEASE WAIT
Page 17
Operating ProceduresDMOM-100™
Table 4.0 Run Test Procedure (Measure an Unknown Resistance)
(Continued)
STEPACTION
4-6
Automatic; no operator action required.
At the end of burn-in time final resistance
displays. Press the “ENTER” key to go to
next display.
DMOM-100 DISPLAY
FINAL RESISTANCE
I= 100 AMPS
500.5 MICRO-OHMS
4-7
4-8
4-9
4-10
Automatic: Print test result option display.
Printing option: When the “PRINT TEST
RESULTS?” displays, press #1 key to
print.
Typical print out is shown in Figure 6.0.
If no printout is needed, then go to next
step.
Automatic; No operator action is required.
When test report completes printing,
KEEP THIS READING?” displays.
“KEEP THIS READING?” If the tested
resistance measurement is to be stored in
test record buffer, press # 1 key (YES). If
no record of the test is to be stored in
memory, then press # 2 key (NO).
PRINT RESULTS?
1. YES
2. NO
PRINTING
PLEASE WAIT
KEEP THIS READING?
1. YES
2. NO
TEST SAVED
4-11
4-12
4-13
Automatic; No operator action is required.
“RUN ANOTHER TEST?” displays.
If another test needs to be run, then press
#1 key (YES). Beginning test options
(SELECT TEST CURRENT:) menu
displays (return to step # 4-1). If another
test is not needed, then press #2 key (NO)
and go to step 4-14.
Return to step #1 to setup for another test
(repeat sequence from step 4-1 to step 4-
11.
10
RUN ANOTHER TEST?
1. YES
2. NO
SELECT TEST CURRENT:
1. 10A 2. 25A
3. 50A 4. 100A
5. CUSTOM
Step 4-1 thru 4-11 displays repeat.
Page 18
Operating ProceduresDMOM-100™
Table 4.0 Run Test Procedure (Measure an Unknown Resistance)
(Continued)
STEPACTION
4-14
“SAVE THIS RECORD?” displays when
another test was not selected in step 4-12.
Test record contains all the reading taken
in this test.
DMOM-100 DISPLAY
SAVE THIS TEST RECORD?
1. YES
2. NO
4-15
4-16
4-17
To save this record, press key #1 (YES). If
test record is not to be saved, press key #2
(NO) and go to step 4-17.
NOTE
A test record is saved in Flash
EEPROM. A record number
will be automatically assigned
to the record by the DMOM100. (The Test record was
assigned #2 in this example).
When record is saved (record # shows on
display), press ENTER to return to START
MENU, which presents options for all
step-by-step operating procedures.
Pressing key #2 (NO) on SAVE THIS
TEST RECORD (see step 4-14) causes the
ARE YOU SURE? Prompt (shown at
right).
RECORD NUMBER 2
HAS BEEN SAVED!
1. RUN TEST 06/11/01
2. SETUP 12:24:01
3. CAL CHECK
ARE YOU SURE?
DATA WILL BE LOST!
1. DO NOT SAVE RECORD
2. SAVE RECORD
4-18
This ends the RUN TEST procedure.
In response to ARE YOU SURE? If key
#1 is pressed, test record will be erased
from working buffer and display returns to
“START MENU”. If key #2 is pressed,
the test record will be saved in Flash
EEPROM. Test record number assigned to
this record will also be displayed. Exit the
RECORD SAVED display by pressing
ENTER, which returns display to the
START MENU.
This procedure allows the user to enter the
equipment identification to the test record.
Table 5.0 Run Setup Procedure (test-record, site, and equipment identification)
STEPACTION
5-1
Press key # 2 (SETUP MENU) on START
MENU to go to Setup menu (shown at
right).
DMOM-100 DISPLAY
1. ENTER ID
2. REVIEW RECORD
3. RESTORE RECORD
4. NEXT PAGE
5-2
5-3
5-4
5-5
On SETUP MENU, press #1 key (ENTER
ID) to begin identification entry (begins
with “COMPANY” display).
Note: Other setup options go to the
following procedural tables:
1. Review Record procedure in Table 6.0
2. Restore Record Procedure in Table 7.0
3. NEXT PAGE procedures.
Enter utility COMPANY name using
alpha/ numeric keypad. When the
COMPANY name is keyed in, press
ENTER to load keyed data and go to
STATION identification display.
Enter utility STATION name using alpha/
numeric keypad. When STATION name
is keyed in, press ENTER to load keyed
data and go to CIRCUIT identification
display.
Enter utility CIRCUIT name using alpha/
numeric keypad. When CIRCUIT name is
keyed in, press ENTER to load keyed data
and go to MANUFACTURER
identification display.
COMPANY:
STATION:
CIRCUIT:
MANUFACTURER:
5-6
Enter tested item’s MANUFACTURER
name using alpha/numeric keys. When
the manufacturer’s name is keyed in, press
ENTER to load keyed data and go to
MODEL identification display.
13
MODEL:
Page 21
Page 22
Operating ProceduresDMOM-100™
Table 5.0 Run Setup Procedure (test-record, site, and equipment identification)
(continued)
STEPACTION
5-7
Enter test item’s MODEL using
alpha/numeric keypad. When item’s
MODEL is keyed in, press ENTER to load
keyed data and go to SERIAL NUMBER
identification display.
DMOM-100 DISPLAY
SERIAL NUMBER:
5-8
5-9
5-10
This completes the ENTER ID procedure.
Enter test item’s SERIAL NUMBER using
alpha/numeric key pad. When serial number
is keyed in, press ENTER to load keyed-in
data and go to KVA RATING display.
Enter test items KVA RATING using alpha/
numeric keypad. When KVA RATING is
keyed in, press ENTER to load keyed-in data
and go to OPERATOR identification display.
Enter test OPERATOR name, using alpha/
numeric keypad. When OPERATOR name is
keyed in, press ENTER to load keyed-in data
and return to START MENU display.
KVA RATING:
OPERATOR:
1. RUN TEST 06/11/01
2. SETUP 12:26:01
3. CAL CHECK
14
Page 23
Operating ProceduresDMOM-100™
5.6Review Record Procedure
This procedure describes steps to review a
test record residing in DMOM-100
working memory. The user can view the
record on the LCD display or from a thermal
printout.
Table 6.0 Review Record Procedure
STEPACTION
6-1
On START MENU, press key #2 (SETUP) to
select SETUP MENU (shown at right).
To review a test record stored in Flash
EEPROM, the user must first restore test
record from Flash EEPROM to working
memory (see paragraph 5.7)
DMOM-100 DISPLAY
1. ENTER ID
2. REVIEW RECORD
3. RESTORE RECORD
4. NEXT PAGE
NOTE
6-2
6-3
6-4
6-5
Press key#2 (REVIEW RECORD) on SETUP
MENU, which displays the REVIEW
RECORD menu options.
If test-result records are to be printed out on
paper, press #2 key (PRINT TEST RECORD)
on the REVIEW RECORD display. Test
records print out as the printing notice
displays. When printout of test records is
complete, display returns to START MENU,
which ends the procedure for this branch of
the SETUP procedure.
If records are to be viewed in sequence
(scrolled), press key #1 (SCROLL TEST
RECORDS) on the REVIEW RECORD
display. Scroll through test records (use ∧
and ∨ keys to scroll). When record of interest
appears, stop scrolling and press ENTER.
When the scrolled data record of interest
displays, press ENTER key. Selected test
record ID displays the selected test record
number. When it is confirmed that the correct
test record ID has been selected, press
ENTER to display the number of tests in the
record, the time and date of the selected test.
REVIEW RECORD
1. SCROLL TEST RECORD
2. PRINT TEST RECORD
PLEASE WAIT
PRINTING . . .
RECORD ID INFO:
1710
VIC
ABC
2 TESTS
06/11/01 17:27:00
15
Page 24
Operating ProceduresDMOM-100™
Table 6.0 Review Record Procedure (continued)
STEPACTION
6-6
6-7
When the record number, with the time and
date of the test, displays and is noted, press
the ENTER key: Display lists full data of the
test, including test number, test current,
burn-in time, and the measured resistance
value.
NOTE
The test record in this example contains 2
tests.
Press ∧ key to advance to next test. Press ∨
key to return to previous test.
DMOM-100 DISPLAY
TEST NUMBER: 1
TEST CURRENT: 100A
BURN - IN TIME: 5 Sec
500.3 MICRO-OHMS
TEST NUMBER: 2
TEST CURRENT: 50A
BURN - IN TIME: 5 Sec
500.1 MICRO-OHMS
6-8
Press STOP to return to START MENU.
This completes the review record procedure.
Display returns to START MENU.
16
Page 25
Operating ProceduresDMOM-100™
5.7Restore Record Procedure
This procedure describes the steps to recall a
test record stored in the DMOM-100
Flash memory.
Table 7.0 Restore Record Procedures
STEPACTION
7-1
On START MENU, press #2 key (SETUP)
to display the SETUP MENU.
1. ENTER ID
2. REVIEW RECORD
3. RESTORE RECORD
4. NEXT PAGE
DMOM-100 DISPLAY
7-2
7-3
7-4
7-5
7-6
On SETUP MENU, press #3 key
(RESTORE RECORD) to display menu of
options (Restore Record, Directory, Erase
Record).
Press #1 key (RESTORE RECORD) to
display menu of restore records options.
Press key #1 (ENTER RECORD
NUMBER) to display prompt to enter
record number to restore. Press key #2
(SCROLL TO SELECT) and go to step 7-6
for Records Directory display.
When record number has been keyed in,
press ENTER to restore the selected record.
When the display confirms that the record is
restored (brief display time) display returns
to REVIEW RECORD options menu
(resume procedure at step 7-9 in Table 7.0).
In the RESTORE RECORD menu, press
key #2 to display a scrolled Records
Directory.
1. RESTORE RECORD
2. DIRECTORY
3. ERASE RECORD
RESTORE RECORD
1. ENTER RECORD NUMBER
2. SCROLL TO SELECT
RESTORE RECORD
NUMBER:
RECORD RESTORED!
RECORDS DIRECTORY
“UP TO SCROLL FWD
“DWN” TO SCROLL RVS
7-7
In the Records Directory, use ∧ and ∨ keys
to scroll through the directory listings of test
records. When the test record of interest
displays, press the ENTER key to display
the record number and the time and date of
the selected test.
17
#1 06/11/01 17:27:00
1710
VIC
Page 26
Operating ProceduresDMOM-100™
Table 7.0 Restore Record Procedures (Continued)
STEPACTION DMOM-100 DISPLAY
7-8
7-9
Press ENTER key again to restore selected
test record. A Record Restored
confirmation displays, after which the
display returns to REVIEW RECORD
(resumes by returning to step 7-9).
Test ENTER key again to display
REVIEW RECORD option.
RECORD RESTORED!
REVIEW RECORD
1. SCROLL TEST ECORD
2. PRINT TEST RECORD
7-10
This completes the Restore Record Procedure.
Press key #1 to display data on LCD (see
step 6-5). Press key #2 to print test record.
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Operating ProceduresDMOM-100™
5.8Print Test Record Directory Procedure
This procedure describes the steps to print
the test record directory that is stored in the
DMOM-100 Flash EEPROM.
Table 8.0 Print Test Record Directory
STEPACTION
8-1
On the RESTORE RECORD display (step 7-
2), press key #2 (DIRECTORY) to go to a
print menu of print options.
DMOM-100 DISPLAY
PRINT DIRECTORY
1. FULL DIRECTORY
2. SHORT DIRECTORY
8-2
PRINT DIRECTORY choice is to print either
a FULL DIRECTORY or a SHORT
DIRECTORY. Regardless of which choice is
selected, the PRINTING DIRECTORY notice
displays as the selected directory prints out a
paper copy. When printout is completed,
display returns to the START MENU. This
ends the directory procedures.
NOTE
The Short directory printout lists the
last 10 test records stored in Flash
EEPROM memory.
PRINTING DIRECTORY
Figure 7.0Typical Directory Printout
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Operating ProceduresDMOM-100™
5.9Test Record Procedure
This procedure describes the steps to delete
a test record or all test records stored in the
DMOM-100 Flash EEPROM.
Table 9.0 Erase Test Record Procedure
STEPACTION
9-1
On the RESTORE RECORD display (step 7-
2), press key #3 (ERASE RECORD) to
display an ERASE RECORD menu of
options (shown at right).
DMOM-100 DISPLAY
ERASE RECORD
1.ERASE SINGLE RECORD
2. ERASE ALL RECORDS
9-2
9-3
9-4
9-5
9-6
On the ERASE RECORD menu display,
press key #1 to erase a single record.
When this selection is made, the user shall
enter record number then press ENTER key
to confirm. Press ENTER key again to
return to main menu.
NOTE
Press STOP key to abort.
Press key #2 to erase all records. Press
ENTER key to confirm.
NOTE
Press STOP key to abort.
Press ENTER key to confirm.
Press ENTER key to return to main menu.
ERASE RECORD
NUMBER: XX
RECORD NUMBER: XX
ERASED!
ERASE ALL RECORDS!
Are you SURE?
“ENTER” TO CONTINUE
ERASING RECORDS
PLEASE WAIT
RECORDS ERASED!
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Operating ProceduresDMOM-100™
5.10 Computer Interface Procedure
This procedure describes the steps to put the
DMOM-100 in computer interface.
Table 10.0 Computer Interface Procedures
STEPACTION
10-1
Press key #4 (NEXT PAGE) on the
SETUP MENU to display the
COMPUTER CONTROL interface (ITF)
and SET TIME options menu.
DMOM-100 DISPLAY
1. COMPUTER CONTROL
2. SET TIME
10-2
5.11 Set Clock Procedures
This procedure describes the steps to set the
DMOM-100 real time clock.
STEPACTION
11-1
Press key #1 (COMPUTER CONTROL)
to place the DMOM-100 under an
external PC’s control. PC software
permits DMOM100 test record to be
transferred to the PC.
To end the PC control, press the STOP
key, which will restore control to the
keypad and return to the START MENU
display.
Table 11.0 Set Clock Procedures
When key #4 (NEXT PAGE) is pressed on
the SETUP MENU, the COMPUTER
CONTROL interface (ITF) and SET TIME
options menu displays.
COMPUTER ITF MODE
DMOM-100 DISPLAY
1. COMPUTER CONTROL
2. SET TIME
11-2
11-3
This completes the Set Clock procedure.
On the first NEXT PAGE menu, press key #2
(SET TIME) to go to steps for setting the
time and date clock.
Enter month, day, year, hour, minute, and
second for real-time clock. Display will now
return to the START MENU.
ENTER
MM-DD-YYHH-MM-SS
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Operating ProceduresDMOM-100™
5.12 Calibration Check
This procedure describes the steps to
perform the calibration check on the
DMOM-100.
Table 12.0 Calibration Check Procedure
STEPACTION
12-1
12-2
12-3
The calibration check is a functional
verification self-test of the DMOM-100.
This procedure begins by pressing key #3
on the START MENU, which displays a
calibration check prompt to attach test lead
clips to a shorting bar (See Figure 8.0).
When test lead clips are attached to a
shorting bar, press ENTER key to proceed
with self-testing process. The self-test
feature checks ramping current and displays
current at each point in a continuous ramp.
When the ramp flattens, the remaining selfcheck automatically sequences without
operator control. If any circuit fails (does
not pass), then do not measure any
resistance until the problem is corrected.
Automatic; no operator action required.