User manual

Appendix A: Performance Specification
A–8
WFM 90 & WFM 91 User Manual
A-6.
Synchronization
CATEGORY
DESCRIPTION
Input Requirements REQ: Internal Reference: Composite video or
black burst with sync amplitudes 40 IRE
(300 mV PAL) "6 dB.
REQ: External Reference: Sync amplitude be-
tween 143 mV and 4 V will synchronize
sweeps.
External Reference Input REQ: DC Input Impedance (Unterminated):
w15 kW.
REF: Return Loss (75 W): w40 dB from
50 kHz to 6 MHz. (With 75 W termina-
tion on, instrument power on.)
REF: Absolute Maximum Input Voltage:
"12 VDC plus peak AC.
A-7. Physical characteristics 
CATEGORY
DESCRIPTION
Dimensions REF: Instrument:
5 inches (127 mm).
3.15 inches (80.0 mm).
9.6 inches (243.8 mm).
Shipping Box:
13.25 x 13.75 x 6 inside
14 x 14.25 x 6.25 outside
Weight REF: With batteries and pouch:
3 lbs.-9 oz.
Without batteries and pouch:
1 lb.-14 oz.
Shipping weight with packaging:
5 lbs.-14 oz.