Giga-tronics 2508A, Operation Manual

Page: 94 / 132

Chapter 4: Specifications & Performance Verification
94 2500A Series Operation Manual, 34172 Revision C, March 2008
4.2.5 Amplitude Modulation
Frequency: 100 kHz to maximum frequency
Depth: 0 to 90% (output = 0 dBm)
Rate (3 dB Bandwidth): DC to 10 kHz (30% Depth)
Sensitivity: 0 to 95%/V selectable
Accuracy: + 10% of setting @ 1 kHz rate
Input:
Range: + 1 Volts Peak
Impedance: 600
Ω
4.2.6 Frequency Modulation
Frequency: 10 MHz to maximum frequency
Input: + 1 Volts Peak
Impedance: 50
Ω
DC FM
Frequency Range: 500 MHz to Maximum Frequency
Deviation: 125 kHz
Input Range: ±1 Vp-p
Accuracy: 5% of deviation, typical
Narrow Mode:
(Modulation Index - Limited by Deviation)
Rate (3 dB Bandwidth): DC to 50 kHz
Peak Deviation: 1 MHz/N where N = Band Index; see Table 4-2
Accuracy: + 5% at 5 kHz rate, .6013 volt peak, 20 kHz/V sensitivity
Wide Mode:
Rate (3 dB Bandwidth): 10 kHz to 5 MHz
Peak Deviation: 20 MHz/N or Modulation Index of 3.7 X F
GHz
, whichever is less
Accuracy: + 5% at 100 kHz rate, 0.2405 V peak input, 1 MHz/V sensitivity
4.2.7 Pulse Modulation
Frequency: 500 MHz to maximum frequency
On/Off Ratio: >80 dB
Minimum Leveled Width: 100 nsec, Internal or External
Minimum Unleveled Width:10 nsec External
50 nsec Internal
PRF (50% duty cycle): DC to 5 MHz, leveled
DC to 10 MHz, unleveled