Open-use_program/aobs_device
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[[Open-use_program/aobs]]
:Table of contents|
#contents
----
#br
** 6. Parameters of "Device Table" for WHSF [#ee8a1490]
*** 6.1 Procedure of Making Device Table [#obb88086]
+ Enter file name of Device Table
+ Set parameters
-- Observing Mode
-- Frontend
-- Analogue Backend
-- Digital Backend
-- Qlook Options
+ Check the setting with Frequency calculation program by...
+ Save and Set
*** 6.2 Observing Mode [#n1cacb34]
You can use the FX correlation mode for wide-band observa...
- ''COR mode'': Correlation mode
-- Choose either FX or F-FX. From 2014, only FX is availa...
- ''Bandwidth'':
-- Choose either 2048MHz or 4096MHz.
- ''Window func.'': FFT window function
-- Choose a window function from a pull-down menu. Effect...
- ''MERGE options''
-- These options allow you to reduce the volume of output...
-- ''binning'': Number of binding channels. Default is "2...
-- ''CH Range'': Channel range you want to use. Default i...
*** 6.3 Frontend [#l212d363]
Currently, both DAHS345 and BAND8 are available..
- ''Rx'': Receiver type
-- Choose a receiver from a pull-down menu. Set same para...
- ''Ftrack'': Tracking frequency
-- You can define up to the 6th decimal place. Set same p...
-- For a high-z object, enter the frequency corrected for...
- ''U/L'': Sideband type for frequency tracking
-- Choose either upper sideband (USB) or lower sideband (...
- ''Fif'': IF frequency
-- Ftrack is converted to Fif by 1st LO. You can select F...
- ''Syn'': Select synthesizer used as 1st LO
RX Synth
DASH3 B
BAND8 B
- ''DSB Factor'': Scaling factor of intensity
-- Choose either 1.0 (SSB Rx) (= Default for DASH3/BAND8)...
*** 6.4 Analogue Backend [#x7ac6fe1]
- ''IF Port'': Input IF signal into Switch box
-- Choose input IFs from pull-down menus.
-- At present, you should not changed the default setting...
- ''MTX Switch'': Input-Output selecting switch
-- Decide the flow of input IF signals into four A/D Conv...
*** 6.5 Digital Backend [#vbb97da3]
Correlators process IF signals from analogue backend. You...
In F-FX mode, IF signals are processed into 512ch at 1st ...
- ''FSel'': Selection of IFs into correlators
-- Choose signals from A/D Convertors into correlators (F...
-- In 4096MHz-bandwidth mode, F0 & F2, F1 & F3 process th...
-- In 2048MHz-bandwidth mode, you can choose any signals ...
- ''Fcenter'': Center frequency of arrays
-- Left columun shows center frequencies of arrays at 1st...
-- Right column shows center frequencies of arrays at 2nd...
-- In F-FX mode, you can further process any consecutive ...
-
-- Check the input parameters by pushing Freq.calc after ...
Table 1. Array name and Correlation
Correlator
Array name Correlation FX 4G-BW FX 2G-BW FFX 4G-BW FFX 2...
1st X1 AC F0&F2 F0 F0&F2 F0
X2 AC - F1 - F1
X3 AC F1&F3 F2 F1&F3 F2
X4 AC - F3 - F3
X5 CC F1*F2 F1*F2 F1*F2 F1*F2
X6 CC - F3*F4 - F3*F4
2nd X7 AC - - F0&F2 F0
X8 AC - - - F1
X9 AC - - F1&F3 F2
X10 AC - - - F3
X11 CC - - F1*F2 F1*F2
X12 CC - - - F3*F4
* AC: Auto Correlation. CC: Cross Correlation.
*** 6.6 Frequency calculation program [#g9fafbe9]
This program calculates center frequencies (Fcenter) of a...
- By pushing Freq.calc button, Fcenters are set to the de...
- If invalid parameters are set, error messages are displ...
- If there is no mistake, "ok" is displayed (Fig 6c) and ...
- When you set the same frequency as Ftrack, the Freq. ca...
CENTER:&ref(aobs_whsf-freqcalc_error_if_s.png,,50%);
&br;
Fig 6a. Example of error in IF Port selection
#br
CENTER:&ref(aobs_whsf-freqcalc_error_fcenter_s.png,,50%);
&br;
Fig 6b. Example of error in Fcenter
#br
CENTER:&ref(aobs_whsf-freqcalc_ok_s.png,,50%);
&br;
Fig 6c. Example of display "ok"
*** 6.7 Qlook Options [#c7f03c23]
- ''OTF Integration Time'':
-- Integration time of a spectrum displayed on Qlook wind...
- %%''Auto Stop''%%: (Not available)
//-- If checked, observation automatically stops when a r...
//-- ''Array'': Array of backend where the noise level is...
//--- Select an array between X1 and X12.
//-- ''Position'': On-point position where noise level is...
//--- If you want to check the noise level at all on-posi...
//-- 'RMS': Threshold of rms noise level
- ''Qlook'':
-- ''on/off'':
--- If checked, you can monitor spectra of the arrays on ...
-- ''binning'':
--- Number of binning channels. Default is "1".
--- You can also enter the other value for channel binnin...
End:
[[Open-use_program/aobs]]
:Table of contents|
#contents
----
#br
** 6. Parameters of "Device Table" for WHSF [#ee8a1490]
*** 6.1 Procedure of Making Device Table [#obb88086]
+ Enter file name of Device Table
+ Set parameters
-- Observing Mode
-- Frontend
-- Analogue Backend
-- Digital Backend
-- Qlook Options
+ Check the setting with Frequency calculation program by...
+ Save and Set
*** 6.2 Observing Mode [#n1cacb34]
You can use the FX correlation mode for wide-band observa...
- ''COR mode'': Correlation mode
-- Choose either FX or F-FX. From 2014, only FX is availa...
- ''Bandwidth'':
-- Choose either 2048MHz or 4096MHz.
- ''Window func.'': FFT window function
-- Choose a window function from a pull-down menu. Effect...
- ''MERGE options''
-- These options allow you to reduce the volume of output...
-- ''binning'': Number of binding channels. Default is "2...
-- ''CH Range'': Channel range you want to use. Default i...
*** 6.3 Frontend [#l212d363]
Currently, both DAHS345 and BAND8 are available..
- ''Rx'': Receiver type
-- Choose a receiver from a pull-down menu. Set same para...
- ''Ftrack'': Tracking frequency
-- You can define up to the 6th decimal place. Set same p...
-- For a high-z object, enter the frequency corrected for...
- ''U/L'': Sideband type for frequency tracking
-- Choose either upper sideband (USB) or lower sideband (...
- ''Fif'': IF frequency
-- Ftrack is converted to Fif by 1st LO. You can select F...
- ''Syn'': Select synthesizer used as 1st LO
RX Synth
DASH3 B
BAND8 B
- ''DSB Factor'': Scaling factor of intensity
-- Choose either 1.0 (SSB Rx) (= Default for DASH3/BAND8)...
*** 6.4 Analogue Backend [#x7ac6fe1]
- ''IF Port'': Input IF signal into Switch box
-- Choose input IFs from pull-down menus.
-- At present, you should not changed the default setting...
- ''MTX Switch'': Input-Output selecting switch
-- Decide the flow of input IF signals into four A/D Conv...
*** 6.5 Digital Backend [#vbb97da3]
Correlators process IF signals from analogue backend. You...
In F-FX mode, IF signals are processed into 512ch at 1st ...
- ''FSel'': Selection of IFs into correlators
-- Choose signals from A/D Convertors into correlators (F...
-- In 4096MHz-bandwidth mode, F0 & F2, F1 & F3 process th...
-- In 2048MHz-bandwidth mode, you can choose any signals ...
- ''Fcenter'': Center frequency of arrays
-- Left columun shows center frequencies of arrays at 1st...
-- Right column shows center frequencies of arrays at 2nd...
-- In F-FX mode, you can further process any consecutive ...
-
-- Check the input parameters by pushing Freq.calc after ...
Table 1. Array name and Correlation
Correlator
Array name Correlation FX 4G-BW FX 2G-BW FFX 4G-BW FFX 2...
1st X1 AC F0&F2 F0 F0&F2 F0
X2 AC - F1 - F1
X3 AC F1&F3 F2 F1&F3 F2
X4 AC - F3 - F3
X5 CC F1*F2 F1*F2 F1*F2 F1*F2
X6 CC - F3*F4 - F3*F4
2nd X7 AC - - F0&F2 F0
X8 AC - - - F1
X9 AC - - F1&F3 F2
X10 AC - - - F3
X11 CC - - F1*F2 F1*F2
X12 CC - - - F3*F4
* AC: Auto Correlation. CC: Cross Correlation.
*** 6.6 Frequency calculation program [#g9fafbe9]
This program calculates center frequencies (Fcenter) of a...
- By pushing Freq.calc button, Fcenters are set to the de...
- If invalid parameters are set, error messages are displ...
- If there is no mistake, "ok" is displayed (Fig 6c) and ...
- When you set the same frequency as Ftrack, the Freq. ca...
CENTER:&ref(aobs_whsf-freqcalc_error_if_s.png,,50%);
&br;
Fig 6a. Example of error in IF Port selection
#br
CENTER:&ref(aobs_whsf-freqcalc_error_fcenter_s.png,,50%);
&br;
Fig 6b. Example of error in Fcenter
#br
CENTER:&ref(aobs_whsf-freqcalc_ok_s.png,,50%);
&br;
Fig 6c. Example of display "ok"
*** 6.7 Qlook Options [#c7f03c23]
- ''OTF Integration Time'':
-- Integration time of a spectrum displayed on Qlook wind...
- %%''Auto Stop''%%: (Not available)
//-- If checked, observation automatically stops when a r...
//-- ''Array'': Array of backend where the noise level is...
//--- Select an array between X1 and X12.
//-- ''Position'': On-point position where noise level is...
//--- If you want to check the noise level at all on-posi...
//-- 'RMS': Threshold of rms noise level
- ''Qlook'':
-- ''on/off'':
--- If checked, you can monitor spectra of the arrays on ...
-- ''binning'':
--- Number of binning channels. Default is "1".
--- You can also enter the other value for channel binnin...
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