JBL 7130, Инструкция по установке и обслуживанию, Страница: 6 / 15

Line/MIC 2 - Input - Line/MIC 1 9-pin socket requiring either two
copper jumpers between pins 4 & 5
and 8 & 9, or a J B L 5901 universal
microphone input transformer or
5195 matching/bridging trans-
former allowing for either a
balanced or unbalanced input.
Output Unbalanced 600 SI direct or 600 n
balanced up to an output level of
+18 dBm.
Input 1 & Balanced input impedance of 1 5 k f t
Input 2 up to a level of +21 dB without
optional 5195 matching/bridging
transformer.
Balanced input impedance of 600 ft
using a 620 ft resistor connected to
terminals HI and L O , up to a level
of +21 dBm with optional 5195
transformer.
Unbalanced 15 k ft input
impedance or 600 ft input
impedance using a 620 ft
resistor connected to terminals
G N O a n d D I R E C T .
MIC 1 Push-lock/push-release switch
Line allowing input to be used for either
microphone or line.
MIC 2 Push-lock/push-release switch
Line allowing input to be used for either
microphone or line
MIC 2 - Input - MIC 1 Balanced input impedance of 600 O.
using a 620
n
resistor connected to
terminals HI and L O , up to a level
of +21 dBm with optional 5195
transformer.
N O T E : When the J B L 5901
universal microphone input
transformer is used, the
microphone pad and control
cannot be used to prevent
transformer saturation if
excessive input signal levels
occur. See S P E C I F I C A T I O N S
(Input Overload) for maxi-
mum input.
F I G U R E 2
5