TESTBOY TV 450
Technical specification
67
9.7.4 Online terminal voltage monitor
Measuring range (V)
Resolution (V)
Accuracy
10
÷
550
1
±
(2 % of r 2 digits)
9.8 General data
Models TESTBOY TV 450 and TESTBOY TV 450 (TYPE B):
Power supply voltage........................ 9 V
DC
(6
×
1.5 V battery or accu, size AA)
Operation.......................................... typical 20 h
Charger socket input voltage ............ 12 V
±
10 %
Charger socket input current ............ 400 mA max.
Battery charging current ................... 250 mA (internally regulated)
Overvoltage category........................ 600 V CAT III / 300 V CAT IV
Plug commander
overvoltage category ................ 300 V CAT III
Protection classification .................... double insulation
Pollution degree................................ 2
Protection degree ............................. IP 40
Display ............................................ 128x64 dots matrix display with backlight
Dimensions (w
×
h
×
d) ..................... 14 cm
×
8 cm
×
23 cm
Weight ............................................ 1.0 kg, without battery cells
Reference conditions
Reference temperature range........... 10
°
C
÷
30
°
C
Reference humidity range................. 40 %RH
÷
70 %RH
Operation conditions
Working temperature range .............. 0
°
C
÷
40
°
C
Maximum relative humidity ............... 95 %RH (0
°
C
÷
40
°
C), non-condensing
Storage conditions
Temperature range ........................... -10
°
C
÷
+70
°
C
Maximum relative humidity ............... 90 %RH (-10
°
C
÷
+40
°
C)
80 %RH (40
°
C
÷
60
°
C)
Model TESTBOY TV 450 (TYPE B):
Communication transfer speed
RS 232 115200 baud
USB 256000
baud
Memory size......................................1700 results
The error in operating conditions could be at most the error for reference conditions
(specified in the manual for each function) +1 % of measured value + 1 digit, unless
otherwise specified in the manual for particular function.
