Cisco GainMaker Reverse Segmentable Node - 1GHz with 40 52 MHz Split テクニカルリファレンス
1 GHz GainMaker System Amplifier
Low Forward Band Roll-off Technical
Bulletin
Low Forward Band Roll-off Technical
Bulletin
Overview
An issue was discovered recently with 1 GHz GainMaker® System Amplifiers
exhibiting signal roll-off in the lower portion of the forward frequency band. The
roll-off occurs when one or more capacitors in the pre-amplifier section become
fractured. The effect of the damaged capacitor(s) on performance is most
significant and noticeable in the lower portion (channels 2-6) of the forward band.
Our experience has shown that units containing these fractured capacitors will fail
Our experience has shown that units containing these fractured capacitors will fail
within a few days of installation and power-up. If an amplifier exhibits the trouble
symptom described in this document, we recommend returning the unit to Cisco
for repair or replacement. Refer to For Information (on page 5).
Important! This phenomenon only occurs in GainMaker 1 GHz High Gain Dual
Important! This phenomenon only occurs in GainMaker 1 GHz High Gain Dual
(HGD) and High Gain Balanced Triple (HGBT) amplifiers and nodes, and in Low
Gain Dual (LGD) amplifiers.
Purpose
This technical bulletin explains to customers using any of the above amplifiers or
nodes how to identify units possibly affected by this issue, and how to initiate
return of any affected units.
Audience
This document is intended for authorized service personnel who have experience
working with similar equipment. The service personnel should have the
background and knowledge required to understand and verify the information
provided in this document.
Qualified Personnel
Only appropriately qualified and skilled service personnel should attempt to
install, operate, maintain, and service this product.