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WAM-520
模組式捷變調變器
規格與使用說明
規格
射頻指標
輸出頻率範圍
：PAL-B/G 48 to 860 MHz;
PAL-D/K 48 to 860 MHz
PAL-I 6.0MHz ± 5KHZ
NTSC 54 to 860 MHz
輸出電平
：+ 45 dBmV (可調範圍最少 15dB 以上)
輸出阻抗
：75 Ohms
影音載波比
：15dB/20dB可選 (+/- 2dB)
頻率精準度
：± 5KHZ
聲音頻率精穩度
：PAL-B/G 5.5MHz ± 5KHZ
PAL-D/K 6.5MHz ± 5KHZ
NTSC 4.5MHz ± 5KHZ
寄生輸出
：≧60 dB out Band (於A/V 比率15 dB 以及調變輸出+ 45 dBmV時).
載噪比
：>60 dB in Band
視頻指標
輸入電平(對應87.5%調變度)
：1 Vp-p. 前面板手動gain 值調整
輸入阻抗
：75Ohms
頻率響應
：± 1 dB (Within 5MHz)
信噪比
：60dB typical
音頻指標
輸入電平（對應正負25 KHz 偏移量）
：140 mVrms. 前面板手動gain 值調整
輸入阻抗
：> 10 K Ohms , unbalanced.
預強調
：PAL-B/G 50 μSec
PAL-D/K, SECAM 50 μSec
NTSC 75 μSec
頻率響應
：± 1 dB ( 40Hz to 15 KHz )
通用指標
AC電源輸入
：90~260 VAC, 50/60Hz
DC電源輸出
：(2U)12V / 4A , 5 V / 6.4A ; (1U) 12V / 2.6A , 5 V / 3.5A
(Single) 12V / 2.3A, 5V /3.5A
環境工作溫度
：0℃ to + 50 ℃
尺寸
：長(19.1 cm ) *寬(8.9cm) *高(2.5cm)
重量
：0.3 Kg
WAM-520 模組式捷變調變器
| Specifications |
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RF |
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| Frequency Range |
PAL-B/G 48 to 860 MHz ; PAL-D/K 48 to 860 MHz |
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PAL-I 55 to 860 MHz ; NTSC 54 to 860 MHz |
| Output Level |
+ 45 dBmV (minimum 15dB adjustment range |
| Output Impedance |
75 Ohms |
| A / V Ratio |
15dB/20dB selectable ( +/- 2dB) |
| Frequency Stability |
± 5KHZ |
| Intercarrier Frequency |
PAL-B/G 5.5MHz ± 5KHZ ; PAL-D/K 6.5MHz ± 5KHZ |
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PAL-I 6.0MHz ± 5KHZ ; NTSC 4.5MHz ± 5KHZ |
| Spurious Outputs |
-60 dBc typical measured at 15 dB A/V ratio and with |
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Modulator output level of +45 dBmV |
| C/N |
60 dB Typical |
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VIDEO
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| Input Level for 87.5% Modulation |
1 Vp-p. Adjustable with front panel VR control |
| Input Impedance |
75Ohms |
| Frequency Response |
± 1 dB (Within 5MHz) |
| S/N |
60dB Typical |
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AUDIO
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| Input Level for 25 KHz Peak Deviation |
140 mV rms. Adjustable with front panel VR control |
| Input Impedance |
Greater than 10 K Ohms , unbalanced |
| Pre emphasis |
PAL-B/G 50 μSec ; PAL-D/K 50 μSec |
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PAL-I 50 μSec ; NTSC 75 μSec |
| Frequency Response |
± 1 dB ( 40Hz to 15 KHz ) |
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GENERAL
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| AC Power Input |
90~260VAC,50/60Hz |
| DC Power Output |
(2U)12V / 4A , 5 V / 6.4A ; (1U) 12V / 2.6A , 5 V / 3.5A |
| Operating Temperature |
0℃ to + 50 ℃ |
| Size |
1”W * 3.5”h * 7.5” d (2.5cm)W * (8.9cm) H * (19.1 cm )*D |
| Weight |
0.3 Kg |
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Packing per set
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| *One complete set for 4 modules installed with 1U power supply & rack: |
| -One inner box for one complete set |
| -Five (5) complete sets (5 inner boxes), or 20 modules per carton |
| -One carton: 16 Kgs/ 3.2 Cuft |
| *One complete set for 10 modules installed with 2U power supply & rack: |
| -One inner foam for one complete set |
| -One carton for one complete set (1 inner foam) |
| -One carton: 8 Kgs / 1.2 Cuft |
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