NF WF1945B - Sweep Marker Output (SWEEP Z-MARKER OUT); External Add Input (EXT ADD IN)

3.2 Input and output connections
WF1945B 3-11
 Sweep marker output (SWEEP Z-MARKER OUT)
Signal characteristics : Low level ; sweep greater than marker
High level ; other times
Output voltage : TTL level, 0 V/+5 V
Recommended load : Above 1 kΩ
Ground : Connected to chassis ground
Avoid shorting the output or applying an external signal. The unit can be damaged.
 External add input (EXT ADD IN)
Input voltage : ±5 V
Input impedance : 50 Ω
External add frequency : Up to 10 MHz
Ground : Connected to signal ground (floating from chassis)
Do not apply a signal exceeding the above voltage. The unit can be damaged.
! CAUTION
! CAUTION
SWEEP Z-MARKETR OUT
22 Ω
D
+5 V
EXT ADD IN
± 42Vpeak
820 Ω
53.1 Ω