0000348: No amplitude of the cross corrlations with RTB at 18cm. - WSRT Issue Tracker

0000348: No amplitude of the cross corrlations with RTB at 18cm.

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ID

Category

Severity

Reproducibility

Date Submitted

Last Update

0000348

[MFFE] 0.unknown/unspecified

major

always

17-05-11 11:17

19-12-11 14:04

Reporter

Yuan Tang

View Status

public

Assigned To

Harm-Jan Stiepel

Priority

normal

Resolution

open

Status

resolved

Summary

0000348: No amplitude of the cross corrlations with RTB at 18cm.

Description

There is the problem on RTB/MFFE-08 at 18cm eVLBI settings(MFFE frequency is
1664MHz) which causes no amplitude of the cross corrlations with RTB. It could
be the LO or LO lock problem in the MFFE-08.

Additional Information

Na 17-5-2011 geen meldingen. In test gezet.

20111212(Yuan):
The problem is still there when I tuned up the eVLBI settings for Dec.14,2011.

20111219
The problem had been solved after the complete unit of LO1High being replaced on MFFE-08/RTB at Dec.14,2011.

MFFE

08

RT

B

MFFE-band

18cm

polarisation

X, Y

sky frequency (MHz)

1664MHz

Relationships

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Issue History
Date Modified	Username	Field	Change
17-05-11 11:17	Yuan Tang	New Issue
17-05-11 11:17	Yuan Tang	MFFE	=> 08
17-05-11 11:17	Yuan Tang	RT	=> B
17-05-11 11:17	Yuan Tang	MFFE-band	=> 18cm
17-05-11 11:17	Yuan Tang	polarisation	=> X, Y
17-05-11 11:17	Yuan Tang	sky frequency (MHz)	=> 1664MHz
17-05-11 11:18	Yuan Tang	Assigned To	=> Harm-Jan Stiepel
17-05-11 11:18	Yuan Tang	Status	new => assigned
12-12-11 13:48	Harm-Jan Stiepel	Status	assigned => testing
12-12-11 13:49	Harm-Jan Stiepel	Additional Information Updated
12-12-11 15:33	Yuan Tang	Status	testing => assigned
12-12-11 15:33	Yuan Tang	Additional Information Updated
19-12-11 14:04	Yuan Tang	Status	assigned => resolved
19-12-11 14:04	Yuan Tang	Additional Information Updated