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2012/05/07

1100 Filled LN2 cold trap.
1630 Start tower assembly procedure.
1800 Conduct detector level continuity checks:
Table 1: Detector level continuity checks
DIB 1 DIB 2
Signal Measured Measured
QET D 220 Ω 235 Ω
LED1 R forward 765 kΩ 783 kΩ
LED1 V forward 1.060 V 1.060 V
LED1 G backward <0.7 nS <0.1 nS
LED2 R forward - 766 kΩ
LED2 V forward - 1.060 V
LED2 G backward - <0.4 nS
Qo(+ve)-Qi(-ve) 432 Ω 423 Ω
Qi(+ve)-Qo(-ve) 240 Ω 273 Ω
1900 Conduct tower level continuity check.
Detector G102 DIB 1
side coax ZB1-1-6 date/who: 2012-05-07 HC & SM
face 2
+ve lead -ve lead signal measured
7 8 QET D 311 Ω
9 chassis LED1 Rforward 764 kΩ
10 chassis LED2 Rforward -
9 chassis LED1 Vforward 1.100 V
10 chassis LED2 Vforward -
chassis 9 LED1 Greverse <0.7 nS
chassis 10 LED2 Greverse -
7 11 Qo Rbias 26.0 nS
12 11 Qo C coupling <0.1 nS
12 13 Qo Rfeedback 26.0 nS
7 14 Qi Rbias 26.0 nS
15 14 Qi C coupling <0.1 nS
15 16 Qi Rfeedback 26.0 nS
Detector G102 DIB 2
side coax ZB1-1-9 date/who: 2012-05-07 HC & SM
face 5
+ve lead -ve lead signal measured
7 8 QET D 325 Ω
9 chassis LED1 Rforward 782 kΩ
10 chassis LED2 Rforward 768 kΩ
9 chassis LED1 Vforward 1.100 V
10 chassis LED2 Vforward 1.100 V
chassis 9 LED1 Greverse <0.1 nS
chassis 10 LED2 Greverse <0.5 nS
7 11 Qo Rbias 25.0 nS
12 11 Qo C coupling <0.1 nS
12 13 Qo Rfeedback 25.0 nS
7 14 Qi Rbias 26.0 nS
15 14 Qi C coupling <0.1 nS
15 16 Qi Rfeedback 26.0 nS
1930 Tower assembly procedure completed.
2315 Filled LN2 cold trap.