8
GMC-I Gossen-Metrawatt GmbH
3
Selection of Measurement Functions
and Measuring Ranges
METRA HIT 16I/L: The socket blocking device only allows for con-
nection to the jacks which are required for the selected function.
3.1
Automatic Range Selection
The multimeter is equipped with automatic measuring range selec-
tion for all measuring ranges, except for 30 mV
and 300 mV
.
This automatic feature is active as soon as the instrument is
switched on. The instrument automatically selects the measuring
range which provides optimum resolution for the measured quan-
tity.
The previously selected voltage measuring range remains active
after switching to the frequency measuring mode.
The instrument is automatically switched to:
3.2
Manual Measuring Range Selection
The automatic measuring range feature can be deactivated and the
ranges can be manually selected and locked in according to the fol-
lowing table.
The manual mode is deactivated by pressing and holding key
AUTO|MAN
(approx. 1s), by activating the rotary switch or by switch-
ing the instrument off, and back on again.
When the instrument is switched back to automatic range selection
in the 30 mV
or 300 mV
ranges, the 3 V
range is activated.
1)
METRA HIT 16I/L only
3.3
Quick Measurements
If you wish to perform quicker measurements than those possible
with the automatic measuring range selection function, make sure
to establish the appropriate measuring range:
• by
manual measuring range selection
, i. e. by selecting the measur-
ing range with the best resolution, see chapter 3.2.
or
• via
DATA function
, see chapter 5. After the first measurement, the
proper measuring range will be automatically determined so that
measurements are performed more rapidly from the second
measured value onwards.
With both functions, the established measuring range is maintained
for the subsequent series mode measurements.
– the next highest range
at
±
(3099 1 digit)
– the next lowest range
at
±
(240 / 280 digits – 1 digit)
⇓
AUTO/
MAN (4)
Function
Acknowledge
Display
Acoust.
Signal
Brief
Manual Mode Active:
selected measuring range is fixed
MAN
(10)
1 x
Brief
switching sequence for:
V
:
3 V
→
30 V
→
300 V
→
600 V
→
30 mV
→
300 mV
→
3 V
→
...
V
/ : 3 V
→
30 V
→
300 V
→
600 V
→
3 V
→
...
Ω
:
30 M
Ω →
30
Ω →
300
Ω →
3 k
Ω →
30 k
Ω →
300k
Ω →
3 M
Ω →
30 M
Ω
...
F :
30 nF
1)
→
300 nF
→
3
μ
F
→
30
μ
F
1)
→
30 nF
1)
...
Hz :
300 Hz
→
3 kHz
→
30 kHz
→
100 kHz
→
300 Hz ...
MAN
(10)
1 x
Long
Return to Automatic Range Selection
—
2 x
