JRC JUE-87 Instruction Manual page 72

MD1:UUVVVVWWWWXXXXYY
⑭
(MD1:83017700007D9D00)
Receiver AGC setting value (UU) shows the gain control
value to adjust level of current receiving signal.
Normal value : from 80(hex) to E0 (Hex)
Lower value shows that receiving signal is stronger and
receiver circuit performance is better.
Receiving C/N0 (VVVV) shows 10 times C/No dBHz.
This value depends on both received signal from satellite
and receiver circuit performances. Bigger C/No is better.
(ex. 0177 (Hex) means 37.5dBHz.)
Normal value : from 15E(Hex) to 1AE(Hex)
Normal C/No (dBHz) from 35.0dBHz (15E)to
43.0dBHz(1AE).
VVVV / C/No (dBHz) / Condition
0190 / 40.0
017C / 38.0
0168 / 36.0
0154 / 34.0
Rec "Good" shows bigger C/No than 35.0dBHz.
Rec "Fair" shows C/No from 34.5 to 33.0 dBHz.
Rec "Poor" shows lower C/No than 33.0 dBHz.
<NOTE>
If receiving C/No shows lower than 34.5dBHz, check
coverage of satellite and ocean region, and select best ocean
region for present location. Refer to Appendix C.
IQ balance (WWWW) is always 0000.
Master OSC Setting value (XXXX: 7D9D (Hex)) shows
control value of Master OSC.
Normal value : from 3000(Hex) to D000(Hex)
Center value is 8000 (Hex).
Nearer value to 8000(Hex) is better.
Modem ATC Wave Detect Power (YY) shows the strength
of interferences to Inmarsat-C.
(Ex. 00 (Hex))
Normal value: from 00 to 30 (Hex).
<NOTE>
If this value is bigger than 80 (Hex), Inmarsat-C can not
receive normally by too strong interferences.
4-6
/ Good
/ Good
/ Good
/ Fair