Ametek 7280 Instruction Manual page 177

Reference Channel
Demodulator and Output Processing
TTL Input (rear panel)
Frequency Range
Analog Input (front panel)
Impedance
Sinusoidal Input
Level
Frequency Range
Squarewave Input
Level
Frequency Range
Phase
Set Resolution
Noise at 100 ms TC, 12 dB/octave slope
Internal Reference
External Reference
Orthogonality
Acquisition Time
Internal Reference
External Reference
Reference Frequency Meter Resolution
Output Zero Stability
Digital Outputs
Displays
Analog Outputs
Harmonic Rejection
Output Filters
X, Y and R outputs only:
Time Constant
Slope (roll-off)
All outputs
Time Constant
Slope
Synchronous Filter Operation
Appendix A, SPECIFICATIONS
0.5 Hz to 2.0 MHz
1 MΩ // 30 pF
1.0 V rms**
0.5 Hz to 2.0 MHz
250 mV rms**
2 Hz to 2 MHz
**Note: Lower levels can be used with the
analog input at the expense of increased phase
errors.
0.001º increments
≤ 0.0001° rms
≤ 0.01° rms @ 1 kHz
90º ±0.0001º
instantaneous acquisition
2 cycles + 50 ms
1 mHz
No zero drift on all settings
No zero drift on all settings
< 5 ppm/ºC
-90 dB
1 µs to 1 ms in a 1-2-5 sequence
6 and 12 dB/octave
2 ms to 100 ks in a 1-2-5 sequence
6, 12, 18 and 24 dB/octave
Available for F < 20 Hz
A-3