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Function Keys
Use the blue keys to select the different test
functions in the 965DSP-B. The blue keys
become number keys when editing.
Use the [Voltage] key to measure DC or
AC voltage.
Use the [Current] key to measure loop or
ground Current.
Use the [Resistance] key to measure
resistance.
Use the [Toolbox] key to access: Load
Coil Count, Self-Calibration, Ohms to
Distance, or Caller ID.
Use the [Opens] key to find the distance
to an ‘open’ (or break) in a pair or cable.
Use the [Tone] key to send tones for pair
identification or measuring loss.
Use the [RFL] key to find the distance to
a resistance fault on a pair.
Use the [ISDN] key to verify the presence of
an ISDN signal, and to measure near-end and
far-end errors on an active ISDN line.
The [TDR] key is not used in the 965DSP-B.
Contact 3M Customer Sevice at 800 426
8688 concerning TDR upgrades.
All functions (except for Tone and TDR) ‘time
out’ in five minutes if no key has been pressed.
Tone and TDR time out after 30 minutes.
Use the [dB] key to measure Loss, Noise,
Longitudinal Balance, or Wideband Loss.
Use the [Talk Set] key to dial numbers or to
place a phone call on a working pair.
Use the [Auto] key to perform a series of
tests on an Active or Inactive pair.