First thing's first: there is no such thing as a universally “good” MER. Although it's common to see a 3x MER referenced as “good” (likely a carryover of the 3x benchmark for LTV to CAC Ratio), a good MER is entirely dependent on your business size, what you're selling, your strategy, and your profitability goals.
Here's the answer: MER, expressed in decibels, is the ratio of average signal constellation power to average constellation error power. Note: Some in the cable industry use “signal-to-noise ratio (SNR)” when what is meant is modulation error ratio.
Typical ultimate MER at a cable (QAM) head-end is 35 dB to 37 dB. A typical value of MER in an analog cable system is 45 dB. The difference between analog and digital levels is 10 dB, giving a digital MER in distribution systems of around 35 dB.
Modulation Error Ratio (MER) is a measure of the signal quality taking into account the sum of all interference effects occurring on the transmission channel. For good quality TV reception preferred MER is at least 25 dB.
What is a good signal? A good signal is considered to be: 50%+ Signal Strength. 100% Signal Quality.
Some problems like transmitter and receiver phase noise, incorrect modulation profiles and even data collisions can certainly contribute to low reported MER, but the most common causes typically are the things that should be done correctly in the first place. Think cable 101.
In summary, if you're paying for an actively managed fund at a bank branch where you receive support from a financial advisor or planner, you can expect to pay an MER of 1.8% or more. If you open a brokerage account and invest directly in a passively managed ETF, you can expect to pay an MER of roughly 0.25%.
Ideal levels are approximately 40 to 50 dBmV for single channels, 37 to 48 dBmV each for 2 to 4 channels. The Signal to Noise Ratios should also all be within three dB of each other. However, for power level -15 to -6 dBmV the SNR should be 33 dB or higher and for -6 to +15 dBmV the SNR should be 30 dB or higher.
A MER above 1.5% is usually considered high, and some MERs are higher than 3%.
The management expense ratio (MER) – also referred to simply as the expense ratio – is the fee that must be paid by shareholders of a mutual fund or exchange-traded fund (ETF). The MER goes toward the total expenses used to run such funds.
The modulation error ratio or MER is a measure used to quantify the performance of a digital radio (or digital TV) transmitter or receiver in a communications system using digital modulation (such as QAM).
Marketing efficiency ratio (MER) — sometimes called media efficiency ratio — measures how well your marketing strategy or campaign performs holistically. It's used to work out how lucrative marketing efforts are as a whole. In other words, how much money a marketer or marketing department spends to get results.
MER (Modulation Error Ratio)
MER is a popular metric used for signal quality measurement in DOCSIS HFC systems. It is the ratio, in decibels, of average symbol power to average error power. MER is, in effect, a measure of the “fuzziness” or spreading of an I/Q constellation's clouds of plotted symbol points.
How do MERs work? The MER is expressed as an annualized percentage of daily average net asset value during the period. For example if a fund's MER is 0.78%, this means the fund incurs annual costs of $78 for every $10,000 invested in a given year.
They are not the same thing. Adding to the confusion is the fact that MER is often called signal-to-noise ratio, or SNR. A good example is a cable modem termination system's (CMTS's) reported upstream SNR. That parameter is MER, not CNR.
Generally, you are looking for a signal strength between -50 dBm and -67 dBm. At -50 dBm, your signal strength is considered excellent and you should not experience any connection troubles. At -60 dBm, your signal is at a good, reliable strength.
In some cases, group savings plans like group RRSPs or mutual funds charge lower management fees due to the higher value of the fund, which can be beneficial to investors. The MER for FlexiFonds funds is 1.5 percent.
Equity Mutual Funds: Typically, an exit load of 1% is charged if units are redeemed within 12 months of investment. Long-term holdings usually incur no charges.
Marketing Efficiency Ratio, or MER, is a metric that allows you to see the impact of how all marketing channels are working together. Rather than just calculating based on the direct revenue associated with your ad campaign, you calculate based on total company revenue.
MER: The modulation error ratio, which is the ratio of the effective value of the vector magnitude to the effective value of the error magnitude on the constellation diagram (the ratio of the square of the ideal vector magnitude to the square of the error vector magnitude).
One prevalent issue is signal loss, which can manifest as a weak or inconsistent signal. This can result from various factors, such as poor cable connections, damaged components, or external interference.