Specifications - Extech Instruments 381235 User Manual

Specifications

General Specifications
Display
Functions
Input connectors
Meter housing
Operating conditions
Power supply
Power consumption
AC adapter (option)
Dimensions; weight
Electrical Specifications
Frequency range
Period range
Resolution, sample rate and
sensitivity
Accuracy
Time base
Temp. coefficient
Input overload
Resolution and sampling rate specifications
Range Gate time selection
2500MHz
SLOW (select 1)
SLOW (select 2)
500MHz
SLOW (select 1)
SLOW (select 2)
10MHz
SLOW (select 1)
SLOW (select 2)
NOTE: In SLOW Gate Time mode (Gate switch set to SLOW), pressing the RESO key
scrolls the meter through SLOW, SLOW (Select1), and SLOW (Select 2) modes.
Sensitivity specifications
Ch.A: 2500MHz range
Ch.B: 500MHz range
Ch.C: 10MHz range, Period
Notes on sensitivity: The apparent sensitivity when feeding a signal into Ch.A may vary
considerably, particularly near 1GHz. The meter's input impedance is a complex impedance,
whereas the output of most signal generators is calibrated for a 50Ω resistive load. This will
result in a terminal voltage different to that expected by the generator, and therefore a
different sensitivity.
0.5" (13mm) 8-digit LCD
Frequency, Data Hold, Relative, Max/Min/Avg & Period
BNC female
Durable ABS plastic
o
32 to 122 F (0 to 50
4 x 1.5V AA cells
105mA DC approx. 2500MHz/500MHz ranges
45mA DC approx. for 10MHz & Period ranges
9VDC, 300 to 500mA (center socket pin positive)
6.8 x 3.1 x 1.4" (173 x 80 x 35mm); 0.75 lbs (340g)
Ch. A: 2500MHz
Ch. B: 500MHz
Ch. C: 10MHz
Refer to Sections 2.3 and 2.4 below
± (4 ppm + 1 digit) @ 23
4.194 MHz quartz crystal
o
0.1 ppm per C typical
5V peak to peak max. for 2500/500MHz range
250V peak to peak max. for 10MHz & Period range
Resolution (Hz)
FAST 1000
SLOW 100
200
500
FAST 100
SLOW 10
20
50
FAST 10
SLOW 1
0.2
0.1
100mVrms (50MHz to 75MHz)
50mVrms (76MHz to 2500MHz)
120mVrms (10M to 35MHz)
50mVrms (36M to 350MHz)
120mVrms (351M to 450MHz)
50mVrms
2
o
C); < 90% RH
o o
C ±5 C
Sampling time (sec)
0.5
2.75
1.5
0.75
0.75
6
5
1.5
0.5
1.25
6
11
381235 Ver. 1.5 3/01