Page 6
MICROPHONE PREAMPLIFIER
Page 7
Instruction Manual
2. QUICK START
1. CHANNEL SELECT
buttons select one of
eight channels for local control.
2. CHANNEL STATUS READOUT
displays input
gain and maximum output settings; function
status and headroom.
3.
MULTIPLE
SELECT
button allows
simultaneous control of a group of channels.
4. ADJUST CONTROL
adjusts gain setting for
the input, maximum output for the MAIN OUT
and AUX OUT, and the Channel, Device, and
Net numbers in the Status Readout Display. For
secondary control it sets the display brightness.
5. GAIN SELECT
button determines the
function of the GAIN control: Input, Main
Output or Aux Output.
6. MUTE
shuts down the analog output of the
selected channel. Gain and other functions can
be adjusted while a channel is muted.
7. PHANTOM
+48V engages the 48V phantom
power for condensor microphones.
8. 26dB PAD
inserts a 26dB PAD (attenuation)
on the input stage.
9. POLARITY REVERSE
reverses polarity on the
input stage.
10. ENABLE LIMITER
engages the MicLim™
limiter on the output of the microphone.
11. LOW CUT 75Hz
engages a 12dB/octave
low cut filter with a corner frequency of 75hz.
12. ADJUST/STORE
arms the ADJUST control
so that MIDI Channel and Device numbers and
Net numbers can be adjusted. After adjustment
the STORE saves the selected numbers.
13. MODE
selects whether the remote control
will be MIDI or LAN.
14. SET I.D.
selects which number (Channel,
Device or Net) is being adjusted.
15. LOCAL CONTROL
button allows
adjustments from the front panel.
16. REMOTE ACTIVITY LED
indicates the
1788A is receiving control data from a remote
device.
17. GLOBAL STATUS READOUT
displays values
for the elected function.
18. CLOCK
button selects either an internal or
external digital clock synchronization reference.
19. RATE
button selects the sampling rate when
using the internal digital clock.
20. MONITOR CHANNEL
selects the channel
sent to the head phone monitor. Selected
channel is indicated on the Channel Status
Readout.
21. VOLUME
control adjusts headphone
monitor level.
22. PHONE JACK
is used for headphones.
23. 700Hz TEST TONE
is used to adjust system
levels. It is bussed to selected channel at one of
two levels (0dBFS or - 0dBFS).
24. POWER
On switch.
5,6,7,8
2
1
9,10,11 12,13,14,15
3
4
16
17
18,19
21
20
22
24
23
2. QUICK START
2.1 FRONT PANEL