Giga-tronics GT 9000, Operation & Maintenance Manual

Page: 27 / 238

1.3.3 RF Output Power
Maximum Leveled Output:
Frequency
Range (GHz)
Standard
(dBm)
With Option 26
(dBm)
.01 to 2 +13 +13
>2 to 8
1
+15 +15
8 to 15 +14 +13
>15 to <20 +13 +11
20 to 26.5 +9.5 +7.5
1
Specification applies from 2 GHz for Models GT 9000/2 - 20 and GT9000/2 - 26
Incremental Level Range: -20 to +20 dBm
Resolution: 0.01 dB, entry and display to -99.99 dBm (display is 0.1 dB at <-100.0 dBm).
Minimum Output Level: -10 dBm (-20 typical); -120 dBm with Option 26 (20 GHz), -100 dBm (26 GHz)
RF OFF: Typically attenuates a 0 dBm signal to <-140 dBm at the output connector.
Output Accuracy
(internally leveled, Scan/AM
off): <+2 dB (-10 dBm to maximum specified power).
Add +.1 dB/10 dB with Option 26.
Output Flatness: <+2 dB
Output Switching Time: Typically <1 ms; 20 ms with attenuator change (Option 26).
Output Impedance:
50
Ω
, nominal.
Output SWR: <2:1
External Leveling: Output power may be externally leveled by positive or negative ZBS detectors or
power meters.
1.3.4 PM Envelope Parameters
Pulse/Square Wave Modulation (PM) specifications apply with Scan/AM and FM off. PM may
be operated with FM.
On/Off Ratio: >80 dB
Rise/Fall Times: <10 ns
Overshoot, Undershoot
& Ringing: +2 dB, maximum
Settling Time (to within 1 dB): <100 ns
Leveled Pulsed Output Power
(referenced to leveled,
unmodulated
output power): +0.5 dB, typical (>100 ns pulse width);
+1 dB typical (<100 ns pulse width).
Introduction
Manual No. 120AM00250, Rev C, September 1998
1-7