[evlatests] Use of Subband 6 in D351 FIR
Barry Clark
bclark at aoc.nrao.edu
Tue Sep 20 19:53:25 EDT 2005
To get the lower part of X band, we have switched from subband 2 to
subband 6 in the polyphase FIR in the D351. (If you have no idea what
that burst of jargon means, you won't be interested in what follows,
anyway.) My previously disseminated table of how to get to various
frequencies must change correspondingly. Setups for the standard bands
are as follows:
VLA Default frequency setups, A IF
L Band C Band X Band U Band
Front end band 1200to1800 4500to5000 8000to9000 14500-15000
First LO 3200 0 13400 19600
First IF 4400to5000 4500to5000 -5000to-4000 -5000to-4000
L6 LO 3639.9 3860.1 3939.9 3610.1
Second IF 1000to1050 1000to1050 -1050to-1000 -1050to-1000
Fixed LO 300 300 300 300
IF at modem 700to750 700to750 -750to-700 -750to-700
Fixed LO 600 600 600 600
Fluke LO 100 100 100 100
Baseband IF 0to50 0to50 -50to0 -50to0
SSLO 1439.9 4860.1 8460.1 14989.9
P Band K Band Q Band
Front end band 325to350 22000to24000 40000to50000
First LO 0 17600 38600
First IF 325to350 4500to5000 4500to5000
L6 LO 689.9 3860.1 3689.9
Second IF 1015to1040 1000to1050 1000to1050
Fixed LO 300 300 300
IF at modem 715to740 700to750 700to750
Fixed LO 600 600 600
Fluke LO 115.8375 100 100
Baseband IF 0to25 0to50 0to50
SSLO 325.9375 22460.1 43389.9
TRANSITION SYSTEM default frequency setups A IF
L Band C Band X Band U Band
Front end band 800to2200 3800to8200 7800to12200 11800to18200
L301(1) Mult 1 1 0 2
L301(1) Freq 12160 14976 NA 12416
DownConv inp -11360to-9960 -11176to-8000 7800to12200 -12000to-8000
L302(1) Freq 13600.1 12995.9 11340.1 12722.1
DownConv band 2240to4000 1819to4000 -3590to-2000 2000to4000
Fixed LO 4096 4096 4096 4096
Sampler band -1856to-1000 -2000to-1000 1000to2000 -2000to-1000
Sampler-FIR alias1216 1216 1216 1216
Sideband reversal Y Y Y N
Baseband IF 0to50 0to50 -50to0 -50to0
SSLO 1439.9 4860.1 8460.1 14989.9
P Band K Band Q Band
Front end band 302to352 18000to26000 40000to50000
4Pconverter 1024 NA NA
L301(1) Mult 1 2 3
L301(1) Freq 12160 16256 17792
DownConv inp -10834to-10784-12000to-8000-12000to-8000
L302(1) Freq 13690.0625 12931.9 12966.1
DownConv band 2856to2906 2000to4000 2000to4000
Fixed LO 4096 4096 4096
Sampler band -1240to-1190 -2000to-1000 -2000to-1000
Sampler-FIR alias1216 1216 1216
Sideband reversal Y Y Y
Baseband IF 0to26 0to50 0to50
SSLO 325.9375 22460.1 43289.9
VLA Default frequency setups, B IF
L Band C Band X Band U Band
Front end band 1200to1800 4500to5000 8000to9000 14500-15000
First LO 3200 0 13400 19600
First IF 4400to5000 4500to5000 -5000to-4000 -5000to-4000
L6 LO 3560.1 3810.1 3889.9 3660.1
Second IF 1000to1050 1000to1050 -1050to-1000 -1050to-1000
Fixed LO 200 200 200 200
IF at modem 800to850 800to850 -850to-800 -850to-800
Fixed LO 600 600 600 600
Fluke LO 200 200 200 200
Baseband IF 0to50 0to50 -50to0 -50to0
SSLO 1360.1 4810.1 8510.1 14939.9
P Band K Band Q Band
Front end band 325to350 22000to14000 40000to50000
First LO 0 17600 38600
First IF 325to350 4500to5000 4500to5000
L6 LO 710.1 3810.1 3739.9
Second IF 1035to1060 1000to1050 1000to1050
Fixed LO 200 200 200
IF at modem 835to850 800to850 800to850
Fixed LO 600 600 600
Fluke LO 230.1 200 200
Baseband IF 0to25 0to50 0to50
SSLO 320.0 22410.1 43339.9
TRANSITION SYSTEM default frequency setups B IF
L Band C Band X Band U Band
Front end band 800to2200 3800to8200 7800to12200 11800to18200
L301(2) Mult 1 1 0 2
L301(2) Freq 12160 14720 NA 12416
DownConv inp -11360to-9960 -10920to-8000 7800to12200 -12000to-8000
L302(1) Freq 13679.9 12789.9 11390.1 12772.1
DownConv band 2000to3740 1870to4000 -3590to-2000 2000to4000
Fixed LO 4096 4096 4096 4096
Sampler band -2000to-1000 -2000to-1000 1000to2000 -2000to-1000
Sampler-FIR alias1216 1216 1216 1216
Sideband reversal Y Y Y N
Baseband IF 0to50 0to50 -50to0 -50to0
SSLO 1360.1 4810.1 8510.1 14939.9
P Band K Band Q Band
Front end band 302to352 18000to26000 40000to50000
4Pconverter 1024 NA NA
L301(1) Mult 0 2 3
L301(1) Freq NA 16256 17792
L301(2) Mult 1 0 0
L301(2) Freq 12160 NA NA
DownConv inp -10834to-10784-12000to-8000-12000to-8000
L302(1) Freq 13696.0 12981.9 12916.1
DownConv band 2862to2912 2000to4000 2000to4000
Fixed LO 4096 4096 4096
Sampler band -2000to-1000 -2000to-1000 -2000to-1000
Sampler-FIR alias1216 1216 1216
Sideband reversal Y Y Y
Baseband IF 0to50 0to50 0to50
SSLO 320.0 22410.1 43339.9
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