Datasheet

4 GMC-I Messtechnik GmbH
METRA HIT AM BASE, AM PRO, AM TECH, AM XTRA
METRA HIT B
ASE, PRO, TECH, X-TRA
Advanced Multimeters
Internal Clock
Time format DD.MM.YYYY hh:mm:ss
Resolution 0.1 s
Accuracy 1 min. per month
Temperature Influence 50 ppm/K
Influencing Quantities and Influence Error
Influencing
Quantity
Sphere of
Influence
Measured Quantity /
Measuring Range
1)
Influence Error
(...% rdg. + ... d) / 10 K
Temperat u re
–10C ... +21C
and
+25C... +
50C
V
0.2 + 10
V
0.4 + 10
100  ...
1 M 0.5 + 10
> 1 M 1 + 10
mA/A
0.5 + 10
mA/A
0.8 + 10
10 nF ... 100 F 1 + 5
Hz 0.2 + 10
C/F (P
t100/Pt1000) 0.5 + 10
C/F the
rmocouple K 0.2 + 10
1)
With zero balancing
Influenc-
ing Qty.
Meas. Qty. /
Meas
. Range
Sphere of Influence
Intrinsic Uncertainty
3)
 ... % rdg. + ... d)
METRA HIT AM XTRA
METRA HIT X-
TRA
METRA HIT O UTDOOR
METRA HIT AM TECH
METRA HIT T
ECH
METRA HIT AM PRO
METRA HIT P RO
METRA HIT AM BASE
METRA HIT B
ASE
Fre-
quency
V
AC
100.00 mV
> 15 Hz ... 45 Hz 3 + 30 3 + 30
> 65 Hz ... 1kHz 2 + 30 3 + 30
> 1kHz ... 10 kHz 3 + 30 —
1.0000 V
...
100.00 V
> 15 Hz ... 45 Hz 2 + 9 3 + 9
> 65 Hz ... 1kHz 1 + 9 3 + 9
> 1 kHz ...10/20kHz
4)
3 + 9 —
1000.0 V
2)
> 15 Hz ... 45 Hz 2 + 9 3 + 9
> 65 Hz ...
1kHz 2 + 9 3 + 9
> 1kHz ... 10 kHz 3 + 30 —
A
AC
100.00 A
...
10.000 0 A
> 15 Hz ... 45 Hz
3 + 10 —
> 65 Hz ... 10 kHz
A
AC
100 mV /
1 V / 10 V
> 65 Hz ... 1 kHz — 3 + 10
2)
Power limiting: frequency x voltage max. 3 x 10
6
V x Hz for U > 100 V
3)
The accuracy specification for frequency response is valid within a display value
range of 10% to 100% of the measuring range for both measuring modes with the
TRMS converter in the AC and (AC+DC) ranges.
4)
METRA HIT AM XTRA / X-TRA / OUTDOOR: Frequency response up to 20 kHz, 
METRA HIT AM TECH / T
ECH: Frequency response up to 10 kHz, 
METRA HIT AM PRO / P
RO: Frequency response up to 10 kHz, 
METRA HIT AM BASE / B
ASE: Frequency response up to 1 kHz
Influencing
Qu
antity
Sphere of
Influence
Measured Quantity/
Measuring Range
Influence Error
5)
Crest factor CF
1 ... 3
V , A
 1 % rdg.
> 3 ... 5  3 % rdg.
5)
Except for sinusoidal waveshape
Influencing
Qu
antity
Sphere of
Influence
Measured Quantity Influence Error
Relative 
humidity
75%
3 days
instrument off
V A,
, F, Hz, C 1 x intrinsic uncertainty
Battery voltage 1.8 to 3.6 V ditto
Included in intrinsic uncer-
tainty
Influencing
Quantity
Sphere of Influence
Measured Quantity /
M
easuring Range
Damping
Common Mode
Interference
Vo
ltage
Interference quantity max. 1000 V
V > 120 dB
Interference quantity max. 1000 V
50 Hz ... 60 Hz, sine
1 V
, 10 V > 80 dB
100 V
> 70 dB
1000 V
> 60 dB
Series Mode
Interference
Vo
ltage
Interference quantity: V
, respective
nominal value of the measuring range,
max. 1000 V
, 50 Hz ... 60 Hz, sine
V
> 50 dB
Interference quantity max. 1000 V
V > 110 dB
Reference Conditions
Ambient temperature + 23 C  2 K
Relative humidity 40 ... 75%
Measured qty. frequency 45 ... 65 Hz
Measured qty. waveshape Sine
Battery voltage 3 V  0.1 V
Response Time (after manual range selection)
Measured Quantity /
Measuring Range
Response Time
Digital Display
Measured Quantity
waveshape
V
, V
AV , A
1.5 s
From 0 to 80%
of upper range limit value
100  ... 1 M 2 s
From  to 50%
o
f upper range limit value
10/40 M 5 s
Continuity < 50 ms
C (Pt 100
) Max. 3 s
1.5 s
10 nF ... 100 F Max. 2 s
From 0 to 50%
o
f upper range limit value
1 000 F Max. 7 s
>10 Hz 1.5 s
Data Interface ( METRA HIT AM XTRA / X- TRA / O UTDOOR only)
Typ e Optical via infrared light through the housing
Data transmission Serial, bidirectional (not IrDa compatible)
Protocol Device specific
Baud rate 38,400 baud
Functions – Select/query measuring functions 
and parameters
–
Query momentary measurement data 
– Read out stored measurement data
The USBX-
TRA plug-in interface adapter (see accessories) is used
for adaptation to the PC’s USB port.
Internal Measured Value Storage 
(METRA HIT AM XTRA / X-TRA / OUTDOOR only)
Memory capacity 4 MBit / 540 kB for approx. 15,400 
measured values with date and time stamp