AMS8-1 — Mkiii 8 Channel Audio Monitoring System

* As of 2014, the SDI Demuxer option has been upgraded from the Demux3 (HD/SD-SDI) to the Demux 4 (Dual In 3G/HD/SD SDI Demuxer) ** As of July 2018, the Analog Audio output connector has been redesigned to be a DB25 female connector with Tascam pinout.

ANALOG OUTPUT

Frequency Response 1.5 dBu from 20Hz to 20kHz Impedance 60Ω Balanced Max Output 23.5 dBu Noise Less than -70 dBu THD Less than 0.05% Connector Type DB25 female Tascam**

AES/EBU INPUTS

AES/EBU OUTPUTS

MONITOR OUTPUT

HEADSET JACK

Type ¼ inch TRS jack

POWER

Input

90-230 VAC,50-60 Hz

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* As of 2014, the SDI Demuxer option has been upgraded from the Demux3 (HD/SD-SDI) to the Demux 4 (Dual In 3G/HD/SD SDI Demuxer)

ANALOG OUTPUT

Frequency Response 1.5 dBu from 20Hz to 20kHz Impedance 60Ω Balanced Max Output 23.5 dBu Noise Less than -70 dBu THD Less than 0.05% Connector Type DB 25 male

AES/EBU INPUTS

AES/EBU OUTPUTS

MONITOR OUTPUT

HEADSET JACK

Type ¼ inch TRS jack

POWER

Input

90-230 VAC,50-60 Hz

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There are eight illuminated push button switches arranged in two rows of four. The upper row designated INPUTS selects the input source to be monitored. The lower row designated PRESETS selects a preset configuration or condition under which the signal is monitored.

The two control knobs designated SELECT and VOLUME are rotary shaft encoders with integral push switches. In the simplest mode of operation, the SELECT knob allows the user to scroll through available options while the VOLUME button adjusts the listening level of the AMS8's speakers.

All eight push buttons, as well as the two knobs with integral push switches, are used in conjunction with the eight-segment read out when the unit is configured during SYSTEM SETUP.

SYSTEM SETUP

To enter system setup, press and hold INPUT buttons 1/2 and 7/8 with one hand and press the SELECT knob. The readout will display System. Press the SELECT button again to enter the mode of operation selection. The readout will display Mode X, where X is 1, 2, or 4.

The VOLUME knob may be rotated, in either direction, to select the appropriate mode of operation.

Rotate the SELECT knob one step clockwise to enter the reference signal setup. The readout will display Ref above the SELECT knob and Int, 75Ω or 110Ω above the VOLUME knob.

Ref Int - means that the internal 48 kHz reference is used Ref 75Ω - means that an external unbalanced reference will be used Ref 110Ω - means that an external balanced reference will be used

Rotating the VOLUME knob in either direction selects the appropriate reference source.

Rotate the SELECT knob another step clockwise to enter the AES OUTPUT #4 Setup. The readout will display Out4 above the SELECT knob and In4 or Mon above the VOLUME knob.

Out4 In4- means that AES input #4 will be routed to AES output #4. Out4 Mon - means that the Monitor Output will be routed to AES output #4.

Rotate the SELECT knob another step clockwise to enter the Dialogue Normalization setup. The readout will display Dn above the SELECT knob and Enbd or Dsbd above the VOLUME knob.

Dn Enbd - means that the dialogue normalization level in the metadata will be applied to the dolby signal. Dn Dsbd - means that the dialogue normalization level in the metadata will not be applied to the dolby signal.

Rotate the SELECT knob another step clockwise. The readout will display Vol over the SELECT knob and a default volume level reading between OFF, -60db and +15dB above the VOLUME knob.

The VOLUME control is used to set the default volume level, in one dB steps, for monitoring audio.

Rotate the SELECT knob another step clockwise. The readout will display O/P above the SELECT knob and either Var or Fix above the VOLUME knob. Rotating the VOLUME knob in either direction will toggle between Var and Fix.

O/P Var - means that all the outputs of the unit will be level controlled and follow the action of the VOLUME control O/P Fix - means that all the outputs will be a fixed line level (-20 dBFs for digital outputs and +4dBu for analog outputs) the VOLUME control will only affect the level of the internal speakers and also the two monitor outputs on the back of the unit.

Rotate the SELECT knob another step clockwise. The readout will display Cal over the SELECT knob and a reference level reading between -22dB and -10dB above the VOLUME knob.

The VOLUME control is used to set the reference level, in two dB steps, for monitoring audio.

Rotate the SELECT knob one more step clockwise. The readout will display Spkr above the SELECT knob and either On or Off above the VOLUME knob. Rotating the VOLUME knob in either direction will toggle between On and Off.

(In Version 1.x.x.x.) Spkr On means the internal speakers and headset jack are enabled, and enables monitor output. Spkr Off means the internal speakers and headset jack are disabled, and disables the monitor output.

(In Version 2.x.x.x. and above) Spkr On means the internal speakers and headset jack are enabled. Spkr Off means the internal speakers and headset jack are disabled.

Rotate the SELECT knob one more step. The readout now displays Exit.

Push the SELECT knob to return to the System setup screen. To exit system setup, turn the SELECT knob one step counter clockwise. The readout displays Exit. Push the SELECT knob once to exit the system setup procedures.

CHECKING THE FIRMWARE

When the system setup mode has been activated and the readout displays System, rotating the SELECT knob clockwise will cycle through the following:

Inputs - This configuration setup allows you to select the input sources that will be enable during monitoring. (See INPUTS SETUP). Assigns - This configuration setup applies only to units set to operate in Mode 1. (See ASSIGNMENT SETUP). Firmware - This allows you to check the version of firmware installed in your unit. Press the SELECT knob once and a numeric code will be displayed in the readout window, such as 2.0.0.0. This is the firmware version identifier and is information that will be helpful if you contact the factory for technical assistance.

To exit the firmware interrogation mode, rotate the SELECT knob one step counter clockwise and push the SELECT knob once when the readout displays Exit.

INPUTS SETUP (for all modes)

A fully assembled AMS8 has multiple program inputs (75Ω, 110Ω, Analog, SDI 1 (A) Groups 1 and 2, SDI 1 (A) Groups 3 and 4 and SD1 2 (B) Groups 1 and 2 and SDI 2 (B) Groups 3 and 4. The Inputs setup allows an operator to enable or disable the input option during monitoring. When the System Setup mode has been activated and the readout displays System, rotating the SELECT knob clockwise one step will put the unit in the Inputs mode. Press the SELECT knob once and the 75Ω option will be displayed in the readout window above the SELECT knob. The display above the VOLUME knob will indicate whether the Input option is enabled. If (Y) is displayed then the Input option is enabled. If (N) is displayed then the input opt

DISPLAYS

Eight 22 segment LED bar graph meters display VU and Peak Program information simultaneously. A reference LED (red) at the zero mark is continuously illuminated.

An eight-character dot-matrix display located above the SELECT and VOLUME controls display signal parameters and status information. During setup, this display is used to guide the user in making selections

Please note that primary functions for controls are designated in white, while secondary functions are designated in green

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