7
Step 8. Input connections
• This unit has six INPUT PORTS for plug-in modules. Select the desired modules for each application.
• Plug the modules into INPUT PORTS, sliding them between the guide rails, and secure each with two screws.
• When not all INPUT PORTS are occupied, cover the vacant PORTS with back panels, and secure them with
screws.
• PLUG-IN MODULES are provided in the following:
Modules should no be inserted or removed
while the amplifier is turned on.
CAUTION
Signal tone generator module (with presettable output level control)
· 1 kHz sine wave
· Yelp and buzzer
· One-tone chime and continuous one-tone chime
Balanced low impedance microphone preamp. module (with presettable low-cut
filter, high-cut filter and gain controls)
S-01
S-02
S-03
H-01, H-21
Balanced low impedance microphone preamp. module (with presettable low-cut
filter, and gain controls)
H-02, H-22
Unbalanced high impedance microphone preamp. module (with presettable low-
cut filter, high-cut filter and gain control)
H-03
Unbalanced high impedance auxiliary preamp. module (with presettable gain
control)
X-01, X-11, X-21
Balanced 10 kΩ bridging transformer module B-01, B-11
Balanced 600 Ω line matching transformer module L-01
Balanced paging input module (with presettable gain control and MUTE Delay) I-01
Balanced 600 Ω line output module (with presettable gain control) T-01
Equalized mag. phono preamp. module (with presettable gain controls) E-01, E-11
· With H-21, H-22 and X-21 modules employing volume remote control functions, connecting a
potentiometer (10 kΩ) to the terminal of any of these modules permits the sound volume to be remotely
controlled by means of the connected potentiometer.
· E-11, X-11 and B-11 modules incorporate muting functions. If a switch is connected to MUTE TERMINAL
on the rear panel of the amplifier and closed, these input signals can be muted.
· T-01 is used to feed out mixed signals to external equipment.
· T-01 should be inserted only in Input Port 5 or 6. (See the supplied "NEW 900 SERIES MODULES"
manual for details.)
Unite these cables to allow free rotation of the amplifier.
Note
Use modules with suffix "S" for standard input port.