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SECTION 1 GENERAL
1-6
Frequency
Carrier Range 125 kHz to 1040 MHz: MG3641A
125 kHz to 2080 MHz: MG3642A
Resolution 0.01 Hz
Accuracy Dependent on the accuracy of the reference oscillator.
In the FM modulation,
Accuracy of reference frequency ±(0.3 % of FM deviation setting +5 Hz)
Internal reference Frequency 10 MHz
oscillator
*1
Aging rate ±5×10
–9
/day
Startup characteristics 1×10
–7
/10 min. (reference after 24-hour
operation)
Temperature stability ±3×10
–8
(0 to 50°C)
External reference input 5/10 MHz, ±10 ppm, ≥0.7 Vp–p/50 Ω (AC coupling)
BNC connector on the rear panel
Buffer output 10 MHz, TTL level (DC coupling)
BNC connector on the rear panel
Switching time Response time from last command, till the preset frequency ±0.1 ppm
is obtained, under external control:
<40 ms
Output level Range –143 to +17 dBm (Permissible setting range: –143 to +23 dBm)
Unit dBm, dB
µ
, V, mV,
µ
V
(Switching between terminated-voltage display and open-voltage
display is possible for dB
µ
, V, mV and
µ
V)
Resolution 0.01dB
Frequency response With reference to 0 dBm
±0.5 dB
±1.0 dB (With pulse modulation on)
*2
Accuracy With pulse modulation off
±1 dB (≤+17 dBm, ≥–127 dBm)
±3 dB (<–127 dBm)
With pulse modulation on
*2
±1 dB (≤+12 dBm, ≥–127 dBm)
±3 dB (<–127 dBm)
Impedance 50 Ω, type N connector
VSWR: <1.5 (≤–3 dBm)
<2.5 (>–3 dBm)
Switching time Response time from last command, till the final level ±0.5 dB is
obtained, under external control:
<50 ms (Normal mode)
<100 ms (Level safety mode)
<10 ms (continuous mode)
Special setting mode Level continuous mode:
Level can be varied over a range of the set value ±10 dB, without
interruptions of the output
Level safety mode:
Level is narrowed to prevent spike-like signals from appearing when
the mechanical attenuator is working.
*1 Available up to 5×10
-10
/day with Reference Crystal Oscillator(Opt.01)
*2 Only with Pulse Modulator(Opt. 11) installed
1.5 Specifications