dBm

(redirected from Sdbm)
Also found in: Acronyms.

dBm

dBm

(DeciBels at 1 Milliwatt) A measurement of power using one milliwatt as the reference point (0 dBm). For example, a signal at .1 milliwatt (100 microwatts) is a loss of 10 dBm. A radio station transmitting 50,000 watts of power may wind up attenuating to only a couple milliwatts by the time it is picked up by a radio receiver. See deciBel and dBA.
dBm TO WATTS CONVERSIONWatts

  +40 dBm = 10 watts        10.0
  +30 dBm = 1 watt           1.0
  +20 dBm = 100 milliwatts    .1
  +10 dBm = 10 milliwatts     .01
    0 dBm = 1 milliwatt       .001
  -10 dBm = 100 microwatts    .0001
  -20 dBm = 10 microwatts     .00001
  -30 dBm = 1 microwatt       .000001
  -40 dBm = 100 nanowatts     .0000001
References in periodicals archive ?
Full IBM Tivoli Directory Server with LDBM and SDBM back ends; LDBM provides a "traditional" LDAP database with access control known from other evaluated ITDS products, while SDBM provides access to RACF user management via LDAP interfaces
The SDBM provides absolute security, access control and accountability, and incorporates ergonomic features that speed and simplify tool location and dispensing.