Martel Electronics M2000 - Manual (Page 6)

6
VI. GETTING STARTED
1. After unpacking the M2000 and becoming familiar with the nomenclature of the unit as
described in the previous section, the M2000 is ready to be operated.
2. Before attaching the power cord to the rear connector the voltage selector must be set
to the proper line voltage. To do this, remove the rear fuse cover found just above the
On/Off rocker switch (see Figure 2, item #1). Pull out the voltage selector connector and
set it for the proper line voltage using the following guidelines:
Line Voltage (50/60Hz) Selector Position
90 to 135 VAC 120 VAC position
220 to 250 VAC 240 VAC position
3. Once the voltage selection has been made, making sure the power switch is off, connect
the AC power cord to the M2000. (See figure 2, item #3 for reference).
4. Turn on the M2000 using the rear panel mounted rocker switch. The M2000 should
power up within a few seconds. For good stability it is best to leave the M2000 on all the
time.
NOTE: If power up does not occur within 30 seconds re-power the unit.
VII. VOLTAGE OUTPUT
1. To output a voltage, enter voltage mode by pressing the key. The calibra-
tor will auto-range in voltage source based on the value of the outputted value. If you
want to lock the calibrator in a specific voltage range press the key followed
by the key.
2. Connect the unit under test (UUT) to the voltage output jacks of the M2000. See figure 3.
3. Using either cursor keys or numeric keypad, enter the desired output value. If the
numeric keypad is used for data, all entries must be acknowledged by pressing the
key.
4. When selecting an output on a new range the M2000 will be in the standby (STBY) mode
which puts the positive (+) output jack in a high impedance state (>100k ohm) for safety.
The output can be placed into the active state by pressing the key which
toggles between the standby and operate modes.
NOTE: The standby mode is also activated if a fault occurs during operation such as an
overload or short circuit condition. For safety the standby mode is activated for the first
output over 30 VDC. Refer to the product specification section of this manual for maxi-
mum drive currents.
5. When small changes to an output value are required or if specific decades need to be
incremented or decremented the cursor controls offers a simple solution. The left and
right arrow keys move a cursor that is used to underscore any digit of the output. The
up/down arrow keys allow the digit to be incremented and decremented.
STBY/OPR
Enter
CAUTION
For best accuracy on the mV range use only test leads with
copper plugs. This will minimize thermal EMFs.
Volts/mA
Shift
Volts/mA
WARNING – To prevent electrical shock, only set
the line voltage with the power cord removed.
!