Specifications
WFM90D and WFM91D ServiceManual 1-5Table1- 3: Audiomode
Category Description
ReferenceLevel s REQ: --10dBu, 0 dBu, +4 dBu, +8 dBu.
REF: Nominal MIC reference: --50dBu.
Measurement Accuracy REQ: 0.5 dB at 1 kHz.
FrequencyResponse REQ: 0.5dBfrom50Hzto20kHz.
Maximum Input Level Amplitude REF: +18 dBu.
DCI nput Impedance REF: ≥15 kΩ.
Audio Output Connector REF: Mini stereo headphone jack.
Maximum Power Output REF: 250 mW.
Table1- 4: Horizontal deflection system
Category Description
Sweep REQ: Sweep will occur in all Horizontal mode settings with or without synchronization.
REF: Sweep Length: TwoLine and Two Field sweep length i s nominally 12 divisions.
1LINE Sweep Repetition Rate REQ: Equal to line-rate of applied video or external sync.
2LINE Sweep Repetition Rate REQ: Equal to half line-rate of applied video or external sync.
2FLDSweep Repet ition Rate REF: Displays 2 full fields, incl uding the field-rate sync between them.
2FLDSweep M agnification REF: ApproximatelyX20.
SweepM agnifier Registration REF: Magnification occurs about the center of the screen.
TimingAccuracy REF: Alltiming and linearity specificat ions exclude the first and last major divisions of the
unmagnified display.
REQ: 10 s/division (2LINE): Within 2%.
REQ: 5s/division (1LINE): Within 2%.
REQ: 1s/division (2LINE + MAG): Within 2%.
REQ: 0.5 s/division (1LINE + MAG): Within 3%.
Integral Linearity REQ: Within 1%.
REF: Measured between the 10 s and 110s points on the 10 s/di vision (2LINE)
sweep.
Horizontal Position REF: Any portion of a synchronized video sweep can be positioned on-screen in all sweep
modes.