IRT VA-700, Руководство пользователя, Страница: 6 / 23

VA-700
I.R.T. Communications Pty Ltd | www.irtcommunications.com
Page 6 of 23
Revision 10
TECHNICAL SPECIFICATIONS
Input:
Type
Differential AC coupled.
Number
2.
Impedance Looping.
Return loss > 46 dB to 6 MHz.
Hum rejection > 40 dB.
Maximum level > 2 Vp-p (0 dB gain).
Outputs:
Type DC coupled.
Number 11 (Ten on rear and one on front panel).
Impedance 75
Ω
source terminated.
Return loss > 40 dB to 6 MHz.
Overload 3.0 Vp-p on 4.43 MHz sine wave;
2.5 Vp-p on pulse.
DC level
Adjustable to 0 V.
Performance:
Gain ± 3 dB. Adjustable from front panel.
Frequency response ± 0.1 dB from 20 Hz to 20 MHz;
± 0.2 dB from 20 Hz to 30 MHz.
Differential gain < 0.1% at 4.43 MHz (12.5% - 87.5% APL).
Differential phase < 0.1
°
at 4.43 MHz (12.5% - 87.5% APL).
Noise < -70 dB (unweighted).
Cross talk < -75 dB (between modules).
Transit time < 22
°
at 4.43 MHz.
Cable Equalisation Up to 300 m, for Beldin YR23769 cable.
Power requirement:
Voltage 28 Vac CT (14-0-14) or
±
16 Vdc.
Power consumption < 3.5VA (all outputs loaded in 75
Ω
).
Other:
Temperature 0 - 50°C ambient.
Mechanical
Suitable for mounting in IRT 19" rack chassis with input, output and power
connections on the rear panel.
Finish Front panel Grey background, black lettering & red IRT logo.
Rear assembly Detachable silk-screened PCB with direct mount connectors to Eurocard and
external signals.
Dimensions 6 HP x 3 U x 220 mm IRT Eurocard.
Due to our policy of continuing development, these specifications are subject to change without notice.