help with power levels

[mulfro]

hi, i am getting freezing on one of my two zgemmas, one is perfectly happy, but the upstairs is freezing a fair amount here are my downtream data

Lock Status Channel ID Frequency Modulation Rx Power RxMER Pre RS Errors Post RS Errors
Locked 3 154750000 Hz 256 QAM -11.9 dBmV 35.4 dB 1750 281
Locked 1 138750000 Hz 256 QAM -12.2 dBmV 35.2 dB 2152 274
Locked 2 146750000 Hz 256 QAM -11.9 dBmV 35.2 dB 1283 273
Locked 4 162750000 Hz 256 QAM -12.3 dBmV 35.4 dB 642 307
Locked 5 170750000 Hz 256 QAM -12.4 dBmV 35.6 dB 418 305
Locked 6 178750000 Hz 256 QAM -12.2 dBmV 35.6 dB 374 294
Locked 7 186750000 Hz 256 QAM -12.2 dBmV 36.0 dB 332 304
Locked 8 194750000 Hz 256 QAM -12.3 dBmV 35.6 dB 386 314

are these too low/high? do i need a booster, or is it a vm problem, any help much appreciated
thanks in advance

 

[rs500nutter]

Ideally the levels should be between -6 and + 10 so your levels are on the low side.
Double check all connections to boxes and splitter fitted etc.

Remove one of the boxes and see what power levels you get.

A engineer might be able to bring the levels within tolerance but that would only apply if they are out of tolerance with no boxes connected etc.

Try the box thats upstairs on the other cable to see if it still glitches etc.

Possibly a hdu 200 powered splitter will bring the levels back up depending on the power levels at source eg no boxes running on the lines etc ::