Sierra Video 507140 - Manual (Page 2)

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Output Impedance Adjustment:
The Output impedance can be adjusted separately for the A Channel and the B Channel.
JP4, JP5, and JP6 control the A Channel while JP7, JP8 and JP9 control the B Channel. Either
output can be set to either a 110 ohm output @ 5 volts peak to peak or 75 ohms @ 1 volt peak to
peak. The output signal is simultaneously available on both the BNC and terminal strip
connectors, however when operating with a 110 ohm output impedance the signal on the BNC is
1/2 amplitude as compared with the terminal strip.
JP4, JP5, and JP6 form the same pattern as JP7, JP8, and J9 on the board and the suite case
jumpers are set in the same pattern for each set of these connectors.
110 ohm Output 75 ohm Output
JP6 (or JP9) JP6 (or JP9)
JP4 (or JP7) JP4 (or JP7)
JP5 (or JP8) JP5 (or JP8)