BELAR FMS-2立體聲調(diào)制監(jiān)視器

• 為左右通道的同步測量提供了倆個獨立的半峰值調(diào)制測量
• 為噪音測量提供了前面板可切換的去加重
• 帶前面板指示燈的導(dǎo)航預(yù)警
• 為音頻的性能證明測量提供了輸出
• 倆個自動量程電壓表帶LED顯示：測量范圍為0 到 -80 dB
• 立體聲分離測量能力超過70 dB at 15 kHz
• 能見度高的后向發(fā)光測量
FMS-2立體聲調(diào)制監(jiān)視器技術(shù)指標(biāo)

輸入電平         4.2 V P-P (3.5 V P-P Opt) 復(fù)合

輸入阻抗         220k ohms, 不平衡, BNC 接口

測量

左測量                       可選擇：全調(diào)制

                                L + R, pilot

                            或左通道調(diào)制
右測量   可選擇: pilot phase, L-R,

                         38 kHz 抑制

                        或右通道調(diào)制

自動量程衰減器         0-60 dB in 10 dB steps,

                             校準(zhǔn)全范圍

                     讀數(shù):  +3 to -80 dB

調(diào)至測量范圍         0 to 133%
調(diào)至測量精度         Better than 2% over entire range

導(dǎo)航測量精度          0.5% (6% to 13% pilot modulation)

分離

左到右          70 dB, 10 Hz to 15 kHz

右到左          70 dB, 10 Hz to 15 kHz

串?dāng)_:

 L+R 到 L-R           85 dB min

 L-R 到 L+R            85 dB min

 SCA 到 L + R            Greater than 90 dB

 SCA 到 L- R             Greater than 90 dB

 SCA 干擾          Greater than 90 dB

輸出
左和右通道程序音頻 +10 dBm, 600 ohms, balanced

左和右通道程序測試   5 vrms,10k ohms, unbalanced

導(dǎo)航    3 V P-P. 27k ohm source

復(fù)合 (less Pilot)   4 V P-P,2k ohm source

音頻輸入指標(biāo)

頻率響應(yīng),左和右         +0.25 dB, 50-15,000 Hz

信噪比              Left and Right 90 dB min

諧波失真  0.01% max. 50-15,000 Hz

互調(diào)失真  0.01% max (SMPTE)
遠程輸出:    Left Meter, Right Meter,

          Pilot Indicator For

尺寸    5 1/4"H x 10 1/2"D x 19"W

                                             (EIA Rack Mount)

電源損耗   15 watts, 117/234 VAC, 50/60 Hz

運輸重量   17 Ibs