Alcorn Mcbride 1746-SMPTE, Руководство пользователя

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4 Installing the 1746-SMPTE
Installing the Module in the SLC 500 Chassis
Attention! Never install or remove any module while power is applied.
Installing the Module
Align the module circuit board with the card guides in the chassis.
Gently push the module in until it is firmly seated, with the retaining clips
engaged at the top and bottom.
Removing the Module
Press the retaining clips at the top and bottom of the module and slide the
module straight out of the chassis.
Wiring the Module
Attention! Never wire any module while power is applied.
The module wiring terminals accept two wires per terminal (maximum) of
14 AWG or smaller stranded wire. Maximum screw torque is 8 in-lb.
The module terminal block is removable. Simply unscrew the upper right and
lower left release screws and pull the entire terminal block straight out. When
replacing the terminal block, alternate the tightening of the release screws to
avoid cracking the block. Maximum screw torque is 8 in-lb.
SMPTE Input
When the 1746-SMPTE is used to read external time code, the signal is
connected to this input. The input is transformer balanced with a 600 ohm
characteristic input impedance, and can accept signals from 2 Vpp to 5 Vpp.
Connect the positive drive to the terminal labeled ‘IN (+)’ and the negative drive
to the terminal labeled ‘IN (-)’. There is no terminal for the cable’s shield; it
should be connected to the chassis ground at the other end of the cable.
SMPTE Output
When the 1746-SMPTE is used to generate or regenerate time code, the signal
comes out of this output. The output is transformer balanced to drive a 600 ohm
load, and can output signals from 2 Vpp to 4 Vpp, as selected by switch SW1.
Connect the terminal labeled ‘OUT (+)’ to the positive drive and the terminal
labeled ‘OUT (-)’ to the negative drive. There is no terminal for the cable’s
shield; it should be connected to the chassis ground at the other end of the cable.