def __init__(self, inst):
        CommandGroup.__init__(self, inst)

        self._cinpMode = ('A', 'A-B', 'I1', 'I100')
        self._cinpGnd = ('Float', 'Ground')
        self._cinpCoup = ('AC', 'DC')
        self._cinpLine = ('Out', 'Line In', '2xLine In', 'Both In')

        self._cinpRmod = ('High Reserve', 'Normal', 'Low Noise')
        self._cinpOfsl = ('6dB/oct', '12dB/oct', '18dB/oct', '24dB/oct')
        self._cinpSync = ('Off', 'On')

        self._strinpSens = ('2 nV/fA', '5 nV/fA', '10 nV/fA', '20 nV/fA',
                            '50 nV/fA', '100 nV/fA', '200 nV/fA', '500 nV/fA',
                            '1 ¼V/pA', '2 ¼V/pA', '5 ¼V/pA', '10 ¼V/pA',
                            '20 ¼V/pA', '50 ¼V/pA', '100 ¼V/pA', '200 ¼V/pA',
                            '500 ¼V/pA', '1 mV/nA', '2 mV/nA', '5 mV/nA',
                            '10 mV/nA', '20 mV/nA', '50 mV/nA', '100 mV/nA',
                            '200 mV/nA', '500 mV/nA', '1 V/¼A')

        self._floatinpSens = (2e-9, 5e-9, 10e-9, 20e-9, 50e-9, 100e-9, 200e-9,
                              500e-9, 1e-6, 2e-6, 5e-6, 10e-6, 20e-6, 50e-6,
                              100e-6, 200e-6, 500e-6, 1e-3, 2e-3, 5e-3, 10e-3,
                              20e-3, 50e-3, 100e-3, 200e-3, 500e-3, 1)

        self._strinpOflt = ('10 us', '30 us', '100 us', '300 us', '1 ms',
                            '3 ms', '10 ms', '30 ms', '100 ms', '300 ms',
                            '1 s', '3 s', '10 s', '30 s', '100 s', '300 s',
                            '1 ks', '3 ks', '10 ks', '30 ks')

        self._floatinpOflt = (10e-6, 30e-6, 100e-6, 300e-6, 1e-3, 3e-3, 10e-3,
                              30e-3, 100e-3, 300e-3, 1.0, 3.0, 10.0, 30.0,
                              100.0, 300.0, 1e3, 3e3, 10e3, 30e3)
    def __init__(self, inst):
        CommandGroup.__init__(self, inst)

        self._cch2Mode = ('Y', 'T', 'Yn', 'Aux3', 'Aux4')
        self._cch2RatS = ('None', 'Aux In 3', 'Aux In 4')
        self._cch2OutS = ('Display', 'Y')
        self._cExpand = ('x1', 'x10', 'x100')
    def __init__(self, inst):
        CommandGroup.__init__(self, inst)

        self._cch1Mode = ('X', 'R', 'Xn', 'Aux1', 'Aux2')
        self._cch1RatS = ('None', 'Aux In 1', 'Aux In 2')
        self._cch1OutS = ('Display', 'X')
        self._cExpand = ('x1', 'x10', 'x100')
    def __init__(self, inst):
        CommandGroup.__init__(self, inst)

        self._crefMode = ('External', 'Internal')
        self._crefRslp = ('Sine', 'TTL Rising', 'TTL Falling')
 def __init__(self, inst):
     CommandGroup.__init__(self, inst)
    def __init__(self, inst):
        CommandGroup.__init__(self, inst)

        self._cstpLock = ('Local', 'Remote', 'Local Lockout')