Grass Valley 8921ADT - Manual (Page 46)

46 8921ADT Instruction Manual
Specifications
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