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full utilization of the new technologies offered by the SG 631, the points

below should

followed carefully:

Use UHER NAB Adapter Z 800 to avoid even the slightest play between reel and hub

shaft (see sec.

2. Use UHER "professional" metal reels (Z 827) as they guarantee smooth movement for

all tape transport functions and decrease tape wear (see sec.

3. UHER "professional" tape Z 830 is recommended for optimum operational results and

best electro-acoustical values (see sec. 6.10).

4. Always use reels of the same size and of the same material together (see sec.

5. Make certain that the CUEING switch is set to "0" for all modes of operation except

CUEING to avoid tape spilling (see sec. 3.18).

6. Make certain that the reel size switch is set to the appropritate position (see sec. 3.24).

7. Read Chapter 7 "Care and Maintenance" with especial care.

8. When the SG 631 is operating in the

mode, for safety reasons neither move

it from horizontal to vertical operating position nor touch the reels under any condition.

9. At the end of the Operating Instructions you will find a list of UHER accessory equipment

available from your UHER dealer to supplement your recording system.

Содержание SG 631 Logic

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Страница 2: ...ed oper ating instructions and recommend that you read them carefully If however you are already very familiar with the operation of modern tape machines you will simply need to read certain sections...

Страница 3: ...ays use reels of the same size and of the same material together see sec 6 10 5 Make certain that the CUEING switch is set to 0 for all modes of operation except CUEING to avoid tape spilling see sec...

Страница 4: ...Contents 28...

Страница 5: ...29...

Страница 6: ...n any tilted position In all operating positions however care must be taken that the spools are securely held onto the hub spindles as described in sec 1 6 below 1 3 Extending Connecting Leads When ma...

Страница 7: ...ard circuit to its alert function Fuses for the D C voltages in the machine may also burn out when the guard circuit is activated Such fuses should be replaced only by a service technician as the caus...

Страница 8: ...three pronged mandrel A should be turned to the right or to the left until it jumps down into the grooves of the stationary setion The adapter is then prevented from falling off The inner ring B of th...

Страница 9: ...d along with it On pressing the power switch and actuating the START or FAST FORWARD key the tape lead will wind onto the take up reel until the transparent or metal coated switching foil appears The...

Страница 10: ...nother actuate the RECORD PAUSE and START J3 keys The function indicators above the keys will light up 6 Press the zero reset button of the counter to mark the beginning of the recording 7 Using the m...

Страница 11: ...t the headphones are connected see sees 2 2 2 4 and 2 7 2 Switch on recorder by pressing POWER button The function indi cator above the STOP key must light up 3 Load tape reels and lock Thread tape an...

Страница 12: ...n Input signals at pins 3 2 and 5 2 2 ground should be between 0 1 mV and 80 mV All commercially available condenser microphones with DIN 45326 8 pin plug may be connected to this socket The plus pole...

Страница 13: ...4 2 2 ground of this socket may be between 1 mV and 200 mV input impedance 27 kohms For in put voltages over 250 mV it is advisable to use the PHONO input socket Output signals delivered to pins 3 2 a...

Страница 14: ...680 kohms per channel This socket is for connecting a starting switch see sec 6 9 when operating with a timer When using UHER Timer A 403 the SG 631 LOGIC is automatically switched to RECORD and STAR...

Страница 15: ...and monitoring through headphones with the MONITOR but ton 9 switched from TAPE to SOURCE position see also sec 3 7 3 2 Radio Phono Record Level Controls L 3 and R Knobs 5 and are for setting the rec...

Страница 16: ...and monitoring through headphones with the MONITOR but ton 9 switched from TAPE to SOURCE position see also sec 3 7 3 2 Radio Phono Record Level Controls L 3 and R Knobs 5 and are for setting the rec...

Страница 17: ...imiting circuit that when the record level is too high pointer in red field of meter reduces the record signal to a manageable level for the duration of the overloading The degree of overloading is sh...

Страница 18: ...g to be checked acoustically at once during record for in B position playback of the signal just recorded is directly off the tape On the other hand with A monitoring the signal delivered by the input...

Страница 19: ...s the SG 631 LOGIC to fast forward wind It may be actuated directly from any other deck function setting When the switch is engaged the green function indicator above it lights up 3 11 START Key On li...

Страница 20: ...ch turn switch to position 1 the tape reels may then be turned by hand Slowly turning the take up reel with one hand while slightly braking the supply reel with the other permits the playback to be he...

Страница 21: ...d Consequently after altering the tape speed do not for get to reset the speed to exactly 19 cm s 71 2 ips using the strobo scope to assure accuracy Fine speed adjustment should be made only after the...

Страница 22: ...then threading the tape see sec 1 6 make certain that the reels are securely locked onto the spindles and that the right switches for tape type switch and reel size switch have been activated see also...

Страница 23: ...l red for the right channel For playback the MONITOR switch on the SG 631 LOGIC must be in TAPE position Set volume tone and channel balance in accordance with the operating instructions for your ampl...

Страница 24: ...track channel must be turned down to zero in order to render the 1 kHz control pulses inaudible On the other hand if the quarter track tape heads Mount Z 411 are used sound for the slide showing may...

Страница 25: ...company During record the mode selector may be set at either MONO 1 or MONO 2 It is advisable to make a test telephone call in order to make a record level test marking or remembering the setting of t...

Страница 26: ...IC with UHER Timer A 403 The timer will switch on the power supply for the SG 631 LOGIC as described in the operating instructions for the timer For recording thread the tape as described in sec 1 6 a...

Страница 27: ...st pull the cover cap in front of the head mount up and off The magnetic heads D E F and G the tape guides H I J and K the reversing pins L M O P and Q will then be easily accessible and clogging depo...

Страница 28: ...V a ips 20 10 000 Hz 33 4 ips 20 16 000 Hz 7 2 ips 20 25 000 Hz For max record level of tape approx 1 5 dB 3 For 0 dB meter reading 1 Better than 60 dB Crosstalk at 1 kHz in Stereo Operation Crosstal...

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Страница 31: ...UHER WERKE MUNCHEN 366 48210 DEF lll 035 1179 R Printed in Germany...

Страница 32: ......

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