Studio Technologies M233-01151 - Manual (Page 44)

Issue 5, November 2014 Model 233 User Guide
Page 44 Studio Technologies, Inc.
Specifications
General Audio:
Frequency Response: 10 Hz-20 kHz, ±0.2 dB, mic
in/main out
Distortion (THD+N): 0.008%, measured at 1 kHz,
mic in/main out
S/N Ratio: 86 dB, referenced to –42 dBu mic in/
–2 dBu main out
Dynamic Range (A-weighted): 108 dB
Connectors:
Mic In, Line In 1 & 2, Intercom Interface: 3-pin
female XLR
Main Out, Talkback Out 1 & 2: 3-pin male XLR
Headphone Out: ¼-inch 3-conductor phone jack
24 Vdc Power In: 2.1 x 5.5 mm coaxial power jack
with locking bushing, compatible with Switchcraft
S760K plug
Spare Connector Locations: 3
Allows up to three Neutrik NC*D-L-1 connectors
to be installed (*=3F, 3M, 5F, 5M, 6F, 6FS, etc.)
Microphone Input/Preamplifier:
Type: electronically balanced
Input Impedance: 2 k ohms
CMRR: >80 dB, 20 Hz-20 kHz, 40 dB gain
Gain Range: 20 to 60 dB, adjustable in 10 dB steps
Compatibility: dynamic or phantom-powered mics
Phantom Power: 48 Vdc, nominal, meets IEC
61938 P48 standard
Compressor:
Threshold: 2 dB above nominal level
Attack/Release Time: 2 mSec/100 mSec
Slope: 5:1
Status LED: compressor active
Line Inputs: 2
Type: balanced, transformer-coupled
Impedance: 10 k ohms
Nominal Level: –12 dBV to +6 dBu, adjustable
Intercom Interface:
Type: 2-channel, unbalanced (pin 1 common; pin 2
DC with channel 1 audio; pin 3 channel 2 audio)
Compatibility: single- and dual-channel intercom
systems such as from RTS™ and Clear-Com®
Impedance: 10 k ohms
Nominal Receive Level: –10 dBu
Nominal Talkback Level: –10 dBu
Sidetone (Null): 0 to –18 dB, adjustable
Pin 2 Minimum Voltage: >18 Vdc for headphone
monitoring of pin 2 and pin 3 intercom audio
Main Output:
Type: balanced, transformer-coupled
Nominal Level: –2 dBu
Maximum Level: +20 dBu into 2 k ohms
Impedance: 100 ohms
Line-Level Talkback Outputs: 2
Type: transformer-coupled with series capacitors
and isolation resistors
Impedance: 600 ohms
Nominal Level: +4 dBu
Maximum Level: +11 dBu (compressor restricts
maximum)
Headphone Output: 1, stereo
Compatibility: intended for connection to mono
or stereo headphones or headsets with nominal
impedance of 100 ohms or greater
Type: voltage driver
Maximum Output Voltage: 12 Vpp, 150 ohm load
Auxiliary Relay:
Function: software configurable
Contacts: 2, form C (Common, Normally Closed,
Normally Open)
Rating: 1 A, 30 W (resistive)
Access: requires user-implemented connector
scheme
Tally Output: 3.5 Vdc, 12 mA maximum, nominal
Power Sources:
Intercom Interface: 24-32 Vdc, 125 mA
External: 24 Vdc, 90 mA @ 24 Vdc; acceptable
range 20-30 Vdc. Each unit shipped with a univer-
sal input/24 Vdc output power supply.
Dimensions (Overall):
8.1 inches wide (20.6 cm)
3.3 inches high (8.4 cm)
8.5 inches deep (22.4 cm)
Weight: 4.5 pounds (2.1 kg)
Specifications and information contained in this
User Guide subject to change without notice.