RTS IFB-325, Руководство пользователя

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6
Internal Jumper
The channel termination is set for operation on intercom channel 2, which is compatible with other RTS equipment. If IFB
operation is required on intercom channel 1, an internal jumper must be changed as described in Table 1.
To gain access to the jumper, disconnect all power and line connections. Remove two screws from the top of weach side and
two screws from the bottom of each side. The jumper location is shown in Figure 2.
FIGURE 2.
Internal Jumper
TABLE 1.
Internal Jumper
Jumper Number Jumper Function Default Setting
J3 IFB Channel Selections
Pin 4&5 shorted:
Channel 1 IFB
Pins 2 & 3 shorted
Pin 2&3 shorted:
Channel 2 IFB
(channel 2)
R12
J2
J3
J1 C8
DS1
C10
C18
C12
C6