Ametek 7280 Instruction Manual page 175

Specifications
Measurement Modes
Display
X In-phase
Y Quadrature
R Magnitude
θ
Phase Angle
Noise
Harmonic
Dual Harmonic
Standard Unit
With option -/99
With option -/98
Dual Reference
Standard Unit
With option -/99
With option -/98
Virtual Reference
Noise
Spectral Display
320 × 240 pixel (¼ VGA) electroluminescent panel giving digital, analog bar-graph
and graphical indication of measured signals. Menu system with dynamic key
function allocation. On-screen context sensitive help.
⎫
⎪
The unit can simultaneously present any
⎬
four of these as outputs
⎪
⎭
nF, n ≥ 32
Simultaneously measures the signal at two different
harmonics F and F of the reference frequency
1 2
≤ 20 kHz.
F and F
1 2
≤ 800 kHz.
F and F
1 2
≤ 2.0 MHz.
F and F
1 2
Simultaneously measures the signal at two different
reference frequencies, F
and F the internal reference.
2
≤ 20 kHz
F and F
1 2
≤ 800 kHz.
F and F
1 2
≤ 2.0 MHz.
F and F
1 2
Locks to and detects a signal without a reference
(100 Hz ≤ F ≤ 2.0 MHz)
Measures noise in a given bandwidth centered at the
reference frequency F
Gives a visual indication of the spectral power
distribution of the input signal in a user-selected
frequency range lying between 1 Hz and 2.0 MHz. Note
the display is not calibrated and is intended primarily to
assist in choosing the optimum reference frequency
Appendix
and F where F is the external
1 2 1
A
A-1