Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/~abpp/total.power Дата изменения: Wed Jan 19 22:52:59 2000 Дата индексирования: Mon Oct 1 20:49:09 2012 Кодировка: Поисковые слова: релятивистское движение

GUIDE TO ESTABLISHING TOTAL POWER DATA FOR LEVEL COMMAND

Test equipment needed: low frequency absolute power meter

1. Open two windows and to current DATA and DESIGN directories

2. Disconnect all MF/DFB cable connections from MFs

3. In DESIGN window edit mf.cal

4. Connect noise source at -15 dBm to IF inputs

5. SETMF {n} {b} 31.5
CHECKMF -n 100 {n}
Edit Imin,Qmin values into mf.cal table which has lines
of "{n} {b} Imin Inom Qmin Qnom"
SETMF {n} {b} {a}
Adjust {a} above until power meter gives +0.0-0.5 dBm
CHECKMF -n 100 {n}
Edit Inom,Qnom values into mf.cal table which has lines
of "{n} {b} Imin Inom Qmin Qnom"

SYNTAX {n} is MF module number 0-11
{b} is low pass filter, e.g., 16e6
min is low level power
nom is nominal level power
{a} is attenuation setting
REPEAT FOR ALL BANDWIDTHS, 16e6; 8e6; 4e6; 2e6; 1e6; 0.5e6
REPEAT FOR ALL MFs

6. Do "cat mf.cal | wc" and check for correct number of lines, 6 per MF

7. Save mf.cal as {s}{yymmdd}.cal. Repeat exercise once per annum and
compare. Or if leveling in data is not accurately done repeat and
inspect differences for source of "problem".

8. Run "cklevel" batch file which gives summary of {a}'s by {b} and MF
in same order as mf.cal. These should "make sense" given identical IF
noise incident on all MFs. Result is in cklevel.dat. An example from
ABPP follows. One could

==============cklevel.bat=======================================
echo off
REM setif to internal noise and LOs to 330e6
setif 3
call resetlo 330e6
rm cklevel.dat
rm temp
REM resetting MFs to 16e6
for %%i in ( 0 1 2 3 4 5 6 7 8 9 10 11 ) do setmf %%i 16e6 14
REM leveling
level -n 100
REM save mfconf in temp
cat %bppsrc%\design\mf_conf.dat > temp
for %%i in ( 0 1 2 3 4 5 6 7 8 9 10 11 ) do setmf %%i 8e6 14
level -n 100
cat %bppsrc%\design\mf_conf.dat >> temp
for %%i in ( 0 1 2 3 4 5 6 7 8 9 10 11 ) do setmf %%i 4e6 14
level -n 100
cat %bppsrc%\design\mf_conf.dat >> temp
for %%i in ( 0 1 2 3 4 5 6 7 8 9 10 11 ) do setmf %%i 2e6 14
level -n 100
cat %bppsrc%\design\mf_conf.dat >> temp
for %%i in ( 0 1 2 3 4 5 6 7 8 9 10 11 ) do setmf %%i 1e6 14
level -n 100
cat %bppsrc%\design\mf_conf.dat >> temp
for %%i in ( 0 1 2 3 4 5 6 7 8 9 10 11 ) do setmf %%i 0.5e6 14
level -n 100
cat %bppsrc%\design\mf_conf.dat >> temp
grep "MF # 0" temp>cklevel.dat
for %%i in ( 1 2 3 4 5 6 7 ) do grep "MF # %%i" temp>>cklevel.dat
==============cklevel.dat=======================================
File TEMP:
16000000.00 11.00 97dec09 23:46:36 LST 00:34:35 MF # 0
8000000.00 12.50 97dec09 23:46:41 LST 00:34:40 MF # 0
4000000.00 13.00 97dec09 23:46:46 LST 00:34:45 MF # 0
2000000.00 12.50 97dec09 23:46:51 LST 00:34:50 MF # 0
1000000.00 13.00 97dec09 23:46:56 LST 00:34:55 MF # 0
500000.00 13.00 97dec09 23:47:01 LST 00:35:00 MF # 0
File TEMP:
16000000.00 10.00 97dec09 23:46:36 LST 00:34:35 MF # 1
8000000.00 11.00 97dec09 23:46:42 LST 00:34:41 MF # 1
4000000.00 11.50 97dec09 23:46:47 LST 00:34:46 MF # 1
2000000.00 12.00 97dec09 23:46:51 LST 00:34:50 MF # 1
1000000.00 12.00 97dec09 23:46:56 LST 00:34:55 MF # 1
500000.00 12.00 97dec09 23:47:02 LST 00:35:01 MF # 1
File TEMP:
16000000.00 10.00 97dec09 23:46:37 LST 00:34:36 MF # 2
8000000.00 11.00 97dec09 23:46:42 LST 00:34:41 MF # 2
4000000.00 11.50 97dec09 23:46:47 LST 00:34:46 MF # 2
2000000.00 12.00 97dec09 23:46:52 LST 00:34:51 MF # 2
1000000.00 12.00 97dec09 23:46:57 LST 00:34:56 MF # 2
500000.00 12.00 97dec09 23:47:02 LST 00:35:01 MF # 2
File TEMP:
16000000.00 11.00 97dec09 23:46:37 LST 00:34:36 MF # 3
8000000.00 12.50 97dec09 23:46:43 LST 00:34:42 MF # 3
4000000.00 12.50 97dec09 23:46:48 LST 00:34:47 MF # 3
2000000.00 13.00 97dec09 23:46:53 LST 00:34:52 MF # 3
1000000.00 13.50 97dec09 23:46:58 LST 00:34:57 MF # 3
500000.00 13.50 97dec09 23:47:03 LST 00:35:02 MF # 3
File TEMP:
16000000.00 11.00 97dec09 23:46:38 LST 00:34:37 MF # 4
8000000.00 12.00 97dec09 23:46:43 LST 00:34:42 MF # 4
4000000.00 12.00 97dec09 23:46:48 LST 00:34:47 MF # 4
2000000.00 12.00 97dec09 23:46:53 LST 00:34:52 MF # 4
1000000.00 13.00 97dec09 23:46:58 LST 00:34:57 MF # 4
500000.00 13.00 97dec09 23:47:03 LST 00:35:02 MF # 4
File TEMP:
16000000.00 11.00 97dec09 23:46:39 LST 00:34:38 MF # 5
8000000.00 12.50 97dec09 23:46:44 LST 00:34:43 MF # 5
4000000.00 12.50 97dec09 23:46:49 LST 00:34:48 MF # 5
2000000.00 13.00 97dec09 23:46:54 LST 00:34:53 MF # 5
1000000.00 13.50 97dec09 23:46:59 LST 00:34:58 MF # 5
500000.00 13.50 97dec09 23:47:04 LST 00:35:03 MF # 5
File TEMP:
16000000.00 13.00 97dec09 23:46:40 LST 00:34:39 MF # 6
8000000.00 13.00 97dec09 23:46:45 LST 00:34:44 MF # 6
4000000.00 12.00 97dec09 23:46:49 LST 00:34:48 MF # 6
2000000.00 12.00 97dec09 23:46:54 LST 00:34:53 MF # 6
1000000.00 12.00 97dec09 23:46:59 LST 00:34:58 MF # 6
500000.00 12.00 97dec09 23:47:04 LST 00:35:03 MF # 6
File TEMP:
16000000.00 11.50 97dec09 23:46:40 LST 00:34:39 MF # 7
8000000.00 13.00 97dec09 23:46:45 LST 00:34:44 MF # 7
4000000.00 13.00 97dec09 23:46:50 LST 00:34:49 MF # 7
2000000.00 13.50 97dec09 23:46:55 LST 00:34:54 MF # 7
1000000.00 13.50 97dec09 23:47:00 LST 00:34:59 MF # 7
500000.00 14.50 97dec09 23:47:05 LST 00:35:04 MF # 7