The 3105 calculates, displays and prints any
or all of the following important quantities:
| |
|
For each
harmonic
to 50th |
For the funda-
mental |
For the
total
signal |
| 1. |
Total harmonic distortion (THD) |
|
|
X |
| 2. |
% of fundamental |
X |
|
|
| 3. |
Phase difference from the fundamental-harmonic
phase |
X |
|
|
| 4. |
Magnitude (Vrms' Arms) |
X |
X |
X |
| 5. |
Real Power (Watts) |
X |
X |
X |
| 6. |
VA |
X |
X |
|
| 7. |
VAR |
X |
X |
|
| 8. |
Power factor (PF) |
X |
X |
|
| 9. |
Ratio (impedance or admittance) |
X |
X |
X |
| 10. |
Complex ratio (network impedance) |
X |
X |
|
| 11. |
Frequency (to ± 0.01 Hz) |
|
X |
|
| 12. |
Phase between 2 inputs (2 voltages, 2 currents or
between V and A) |
X |
X |
|
Specifications
Inputs:
Number of channels: two
Isolated input mode: 4, transformer-isolated, floating, connectors for current or
voltage; high and low inputs for each channel
Non-isolated input mode: 2 identical, arranged high and ground
Frequency ranges: isolated - 40 Hz-3.2 KHz; non-isolated - 1 Hz-500KHz
Amplitude ranges: isolated - 50-500 V; 0.5-5A; non-isolated - 1, 3, 10, 30, 100,
300 .V or mV
Auto-range: either or both input channels automatically select correct voltage
range within 3 msec plus 2 x measurement time for each range changed
Impedence: isolated - 230 Krohms voltage; 0.02 ohms, max. current; non-isolated - 1
megohm in parallel with 100 pf
Correction factor: programmable to automatically correct for loading effect of
instrument and external potential and current transformers
Crest factor: 2.0 max. with full scale input
Frequency reference: automatic lock on input signal or ext. reference from 1 Hz to
500 KHz
Measurements:
Number of harmonics: up to 50th
Maximum time per measurement (settable): 16 samples (to 7th har.) - 1 cycle or 1.4
msec, whichever greater; 64 samples (to 31st har.) - 1 cycle or 5.68 msec, whichever
greater; 256 samples (to 50th har.) - 1 cycle or 22.72 msec, whichever greater
Analog settling time: 20 µsec max. for pulsed sinewave to within rated accuracy
(except when auto-ranging)
Response time (for step change in frequency): fast (clean inputs) - 6 x measurement
time or 4 msec. whichever greater; slow (noisy inputs) - 60 x measurement time or 40 msec.
whichever greater
Output reading repetition rate: 4/sec display only; 2/sec for printer; 4/sec for
remote output (RS232C or optional IEEE-488)
Measurement trigger: keyboard, int., ext. or via optional IEEE-488
Functions:
For each harmonic (ch 1 and/or ch 2): % of fundamental Vand A; phase difference
from fundamental (phaseF-phaseH) - harmonic phase
For each harmonic and fundamental (ch 1 and/or ch 2): Volts (RMS), Amps (RMS);
power, VA, VAR; ratio, complex ratio; power factor (PF); frequency (fundamental only)
phase difference between ch 1 and ch 2 (phase2-phase1)
For total signal (ch 1 and ch 2): total harmonic distortion (THD); power, ratio,
Volts (RMS), Amps (RMS)
Key Features:
Real-time clock: date and time displayed and printed; measurements can be preset
for any of 15 times within 24 hours or at preset time interval; 1 hr battery backup to
ride through power drop-outs
Stored setups: 8 different setups in non-volatile memory
Auto restart: unit automatically restarts in the default setup after temporary
power loss; real-time clock is not interrupted
Cassette recording: automatic recording on cassette deck through standard RS-232C
port (unattended operation)
Readout:
Display: 20 character alphanumeric LED
Printer: 20 column alphanumeric, thermal matrix-type strip; unless turned off,
automatically reproduces all information on the display
Interface: standard RS-232C port (rear panel) for external cassette deck, TTY or
digital printer; IEEE-488 optional
Physical:
Size: 17 in. (43.2 cm) wide x 15.5 (39.4 cm) deep X 7 in. (17.8 cm) high; with
3100-RB-2 Kit, height is 10.5 in. (26.67 cm).
Weight: approx. 45 lbs. (20.5 Kgm)
Temperature: 0° to 45° C. operating; -40° to +55° C. storage
Power: 90 Watts, 95-130VAC or 190-250 VAC (selectable); 47-63 Hz |