Maxtor 777 W V1.0 Manual de instrucciones descargar pdf (Pagina 46)

46 8921ADT Instruction Manual

Speciﬁcations

Table 7. 8921ADT Speciﬁcations

Parameter Value

Reference Input

Number of inputs 1 loop-through

Impedance 75 Ω

Connector type BNC loop-through

Input return loss > 40 dB 10 kHz to 10 MHz @ 75 Ω

Common mode input voltage ± 1 V maximum

Differential DC ± 0.25 V maximum

Common mode rejection ratio > 35 dB @ 50/60 Hz

Free run frequency accuracy ± 20 ppm of selected sampling frequency

Reference input types:

AES3ID or Word Clock

48 kHz sample rate

AES3ID level = 1V p-p nominal, 200 mV to 2 V p-p

Word clock level = 2.5 V p-p nominal, 200 mV to 5 V p-p

Capture range = ± 100 ppm (48 kHz ± 4.8 Hz)

Video (NTSC/PAL)

Locks to video within ± 50 ppm of the nominal video rate for

SMPTE170M/NTSC and CCIR624?PAL. NTSC can use SMPTE318M-1999 sig-

nal on line 15 to sync AES blocks. (Downstream equipment may not be able to

lock to this wide of range.)

Level = 1 V p-p nominal

Tracking I/O (jumper J5 set for Trk In and J6 set for Trk Out)

Number of inputs/outputs 1 input and 1 output

Input/output type Conforms to RS-232 levels and impedance

Analog Input s

Number of inputs 4 balanced

Impedance > 22 k Ω

Common mode input voltage 20 V maximum

Differential DC ± 0.25 V maximum

Common mode rejection ratio > 72 dB, 20 Hz to 20 kHz

Connector type 3-pin mini-terminal strip

Digital Outputs

Balanced (jumpers J2, J3, and J4 set to Bal)

Number of outputs 3 balanced for AES1 and 3 balanced for AES 2 outputs

Signal type AES3-1992

Output voltage level 3 V p-p ± 0.2 V @ 110 Ω

Output impedance 110 Ω

Output return loss > 25 dB (100 kHz to 6 MHz)

Output rise/fall time 5 ns to 30 ns with 110 Ω load

Connector type 3-pin mini-terminal strip

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 57 58

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Maxtor 777 W V1.0 Manual de instrucciones Pagina 46

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