COMMENTATORS BASE STATION
TYPE GSOC23 SPECIFICATION

NOTES
The GSOC23 is entirely compatible with our original GSOC4 commentators box as well as with our new improved box type GSOC24.

ENVIROMENTAL
Operating temperature 0 to 40 deg Centigrade
Storage temperature -10 to 60 deg Centigrade

POWER SUPPLY
Input connector IEC fixed plug
Operating voltage 8 to 132 OR 170 to 264 Volts AC with automatic selection
Operating frequency 47-63 Hz
Temperature The Heatsink will rise 25deg C above ambient

ALL OUTPUTS
Output Impedance 50-60 ohms electronically balanced
Normal load impedance High impedance
Minimum load impedance 600 ohms
Maximum output before clipping > +12dBu

ALL INPUTS
Input impedance > 50k ohms electronically balanced
Acceptable input levels -18dBu to +10dBu

TECHNICIANS HEADPHONES
Impedance each ear 100 ohm to high Z
Connector Jack socket that accepts A or B gauge jacks

PROGRAMME AND CO-ORD LINE IDENT RECORDERS
Total message time 16seconds. Any unused time will be filled with 1KHz tone.
Level at output 0dBu programme (+8 peaks) with 0dBu line up tone

CALL HOME SIGNALLING ON CO-ORD CIRCUIT
An opto isolated loop closes for 5 seconds

HOME CALLS SIGNALLING ON CO-ORD CIRCUIT
On receipt of an earth loop box and base station are signalled

SPECIFICATION FOR SIGNALS FROM BASE STATION
TYPE GSOC23 TO COMMENTATORS BOX TYPE GSOC24

NOTES
The GSOC24 is a new improved version of our GSOC4. It is entirely compatible with the original GSOC4 and can be used with any of our original base stations (GSOC3, GSOC5 or GSOC8) as well as with our new base stations type GSOC23 and GSOC26

LINE UP
All levels to the commentators box are correct when preset using the LED column meter.

NOISE
Noise is measured into high impedance at the MIX output of the GSOC24 with a CCIR Quasi-peak meter. All faders are closed and no signals are sent to the GSOC24.
< -58 dB CCIR unwtd quasi-peak

FREQUENCY RESPONSE
Frequency response is measured from the international sound input of the GSOC23 to the mix output of the GSOC24. The international sound rotary fader is set to 12 o’clock and the international sound input level adjuster is set to line up using the LED meter.
Better than +/- 2dB from 60 Hz to 11kHz

DISTORTION
Total harmonic distortion is measured from the GSOC23 international sound input to the GSOC24 mix output. Levels should be set as for frequency response measurement.
Any frequency 300Hz to 3kHz THD < 0.5 %

CROSSTALK
Co-ord to Mix output. Tone is fed to the co-ord input on the GSOC23 and it’s level set to ‘PPM4’ on the LED meter. Crosstalk is then measured at the mix output of the GSOC24 using a narrow band filter.
Crosstalk at 1kHz < -60dB
Crosstalk at 10kHz < -45dB

LINKS TO SPECIFICATIONS:
Full technical specifications for the equipment are available by following the links below:

Commentators Box Type GSOC24
Commentators Base Station Type GSOC26
Commentators Base Station Type GSOC23
Coaxial Cable

OTHER COMMENTATORS EQUIPMENT PAGES

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