12206 Simpson, 12206 Datasheet - Page 11

• Manufacturer Part Number: 12206
• Description: Analog Multimeters 260-6XLM VOM LOW P
• Manufacturer: Simpson

Specifications of 12206

• Accuracy: +/- 2 %
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.4.1
4.4.2
4.4.3
When using the Instrument as a millivoltmeter, care must be taken to prevent
excessive voltage from damaging it. Before using the 250 millivolt range, first use
the 1.0 volt DC range to affirm that the voltage measured is no greater than 250
millivolts.
a.
b.
c.
d.
e.
f.
a.
b.
c.
d.
e.
f.
g.
Use extreme care when working with high voltage circuits. For maximum safety,
avoid touching the Instrument or test leads while power is on in the circuit being
measured.
a.
b.
c.
Set the function switch to +DC.
Plug the black test lead into the -COMMON jack and the red test
lead into the +50 µA/250 mV jack.
Connect the black test lead to the negative side of the circuit being measured
and the red test lead to the positive side of the circuit.
Turn power on and read the voltage on the black scale marked DC and use
the figures marked 0-250. Read directly in millivolts.
Turn the power off and disconnect the test leads. Return the range switch to
the OFF/TRANSIT position.
Set the function switch to +DC.
Plug the black test lead into the -COMMON jack and the red test lead into the
+jack.
2.5V, 10V, 25V, 100V, 250V or 500V. When in doubt about the approximate
voltage present, always use a sufficiently high voltage range to protect the
Instrument. If the voltage reading is within the limits of a lower range, the
switch then may be set to that range to obtain a more accurate reading.
Be sure the power is off in the circuit being measured and all capacitors have
been discharged.
Connect the black test lead to the negative side of the circuit being measured
and red test lead to the positive side of the circuit.
Turn on the power of the circuit and read the voltage of the black scale marked
DC. For the 2.5V and 25V ranges, use the 0-250 figures and divide the read-
ing by 100 and 10 respectively. For the 10V and 250V ranges, read the 0-10
and 0-250 figures directly. For the 500V range, use the 0-50 figures and
multiply the reading by 10. For the 100V range use the 0-10 figures and
multiply by 10. For the 1V range, use the 0-10 figures and divide by 10.
Turn the power off, disconnect test leads and return the range switch to the
OFF/TRANSIT position.
Set the function switch to +DC.
Set the range switch to 1000V (dual position with 500V).
been discharged.
Measuring DC Voltage: 0-250 mV
Set the range switch to the 25V (50 µA) position.
Measuring DC Voltage: 0-1 through 0-500V
Set the range switch to one of the seven voltage range positions marked 1V,
Measuring DC Voltage: 0-1000V
Be sure the power is off in the circuit being measured and all capacitors have
!
14
3.
3.1
All operating and adjustment controls, connectors and indicators are described in
this section along with a list (Table 3-1) describing their function. Become familiar
with each item prior to operating the Instrument.
The 260 has a large, easy-to-read, 4-1/2” indicating instrument. Below the indi-
cating instrument are three controls and seven circuit jacks. Switch positions and
circuit jacks are marked in white, blue, green and red characters printed on a
subsurface vinyl panel overlay. The colors on the overlay correspond to the dial
graphics.
1.
2.
CONTROLS, CONNECTORS & INDICATORS
Front Panel
Range Switch:
Function Switch: The function switch has three positions: -DC, +DC and AC.
2.
Table 3-1. Controls and Connectors
ALL TERMINAL 1KV MAX.
COMMON
The range switch has 18 positions. It may be turned to any
position from either direction. There are seven voltage po-
sitions, four direct current, six resistance and an OFF/TRAN-
SIT position. Two of the resistance positions are for Low
Power Ohms.
To measure DC current or DC voltage, set the function switch
at -DC or +DC, depending on the polarity of the signal ap-
plied across the test leads. For resistance measurements,
the switch may be in either the +DC or -DC position. The
function switch can reverse the test leads without need for
removing the test leads from the circuit under test. To mea-
sure AC voltage, set the function switch into its AC position.
RESET
DC
+DC
AC
5A
+
AMP-CLAMP
Figure 3-1. Front Panel
TRANSIT
1V DC
1000V
L.P.
2.5V
50uA
100V
500V
250V
OFF
Rx1
25V
10V
11
1.
L.P.
Rx10
Rx1
Rx100
Rx1K
Rx10K
0.5mA
5mA
AMPS
50mA
500mA
250 mV
+50 uA
OUTPUT
350 VCD
MAX.
OHMS ADJ.
AC DC
1000 V
+5A
3.
4.