Keysight Agile Signal Generator Service Guide 15
Troubleshooting
Rear Panel
The rear panel contains the power line module, LAN, GPIB, 2 USB, PCIe, BNC
10 MHz input, BNC 10/100MHz output, BNC 10 MHz EFC, BNC System sync
output 10 MHz, 100 MHz or 250 MHz, BNC System sync input 10 MHz,
100 MHz or 250 MHz, 6 GHz output SMA female connector, 6 GHz input SMA
female connector and A13 Auxiliary I/O modules (Option CC1, 100 pins LVDS
binary data format or Option CC2 50 pins BCD data format).
Frequency Generation
The DAC board generates frequencies 0.01 to 3 GHz using the 6 GHz clock
from the reference module.
Output
Frequency
DAC Board
Output Frequency
Path Note: Normal Mode
< 1.43 GHz 0.01 - 1.43 GHz Low Band The DAC output routes to the Lowband path of the A14
switch and then to the A18J2 Low band Output Module
input.
≥ 1.43 and ≤ 3.0 GHz 0.715 to 1.5 GHz Low Band The DAC output routes to the Highband path of the A14
switch and then A16J2 frequency multiplier. A first
multiplier is used to produce the output frequency
which routes to A16J4, to the input of A17J1, then to
A17J2 and to A18J1, Low band Output Module.
≥ 3.0 and ≤ 6.0 GHz 0.750 to 1.5 GHz Mid Band The DAC output routes to the Highband path of the A14
switch to A16J2 frequency multiplier. The output is then
routed from A16J4 to A17J1, Agile Mod/Filter Midband
> 6 GHz 0.750 - 1.5 GHz High Band 0.750 to 1.5 GHz output of the DAC is multiplied by 2, 4,
8, or 16 via A16, Frequency Multiplier to achieve
frequencies between > 6 GHz and 20 GHz. The output of
the A14, Highband path routes from A14J2 to A16J2
Frequency Multiplier. The output is then routed from
A16J10 to A17J3, Agile Mod/Filter Highband.
On Option 540/54E, the 10 to 20 GHz signal is doubled
via A19, 40 GHz Doubler to achieve frequencies between
20 and 40 GHz.
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